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package org.babyfish.jimmer.sql;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.babyfish.jimmer.impl.util.ClassCache;
import org.babyfish.jimmer.impl.util.StaticCache;
import org.babyfish.jimmer.lang.OldChain;
import org.babyfish.jimmer.meta.*;
import org.babyfish.jimmer.sql.association.meta.AssociationProp;
import org.babyfish.jimmer.sql.association.meta.AssociationType;
import org.babyfish.jimmer.sql.ast.impl.EntitiesImpl;
import org.babyfish.jimmer.sql.ast.impl.mutation.AssociationsImpl;
import org.babyfish.jimmer.sql.ast.impl.mutation.MutableDeleteImpl;
import org.babyfish.jimmer.sql.ast.impl.mutation.MutableUpdateImpl;
import org.babyfish.jimmer.sql.ast.impl.query.FilterLevel;
import org.babyfish.jimmer.sql.ast.impl.query.MutableRootQueryImpl;
import org.babyfish.jimmer.sql.ast.impl.query.MutableSubQueryImpl;
import org.babyfish.jimmer.sql.ast.mutation.LockMode;
import org.babyfish.jimmer.sql.ast.mutation.MutableDelete;
import org.babyfish.jimmer.sql.ast.mutation.MutableUpdate;
import org.babyfish.jimmer.sql.ast.query.MutableRootQuery;
import org.babyfish.jimmer.sql.ast.query.MutableSubQuery;
import org.babyfish.jimmer.sql.ast.table.AssociationTable;
import org.babyfish.jimmer.sql.ast.table.Table;
import org.babyfish.jimmer.sql.ast.table.TableEx;
import org.babyfish.jimmer.sql.ast.table.spi.TableProxy;
import org.babyfish.jimmer.sql.cache.*;
import org.babyfish.jimmer.sql.di.*;
import org.babyfish.jimmer.sql.dialect.DefaultDialect;
import org.babyfish.jimmer.sql.dialect.Dialect;
import org.babyfish.jimmer.sql.event.TriggerType;
import org.babyfish.jimmer.sql.event.Triggers;
import org.babyfish.jimmer.sql.event.binlog.BinLog;
import org.babyfish.jimmer.sql.event.binlog.BinLogPropReader;
import org.babyfish.jimmer.sql.event.binlog.impl.BinLogImpl;
import org.babyfish.jimmer.sql.event.binlog.impl.BinLogParser;
import org.babyfish.jimmer.sql.event.impl.TriggersImpl;
import org.babyfish.jimmer.sql.exception.DatabaseValidationException;
import org.babyfish.jimmer.sql.exception.ExecutionException;
import org.babyfish.jimmer.sql.filter.Filter;
import org.babyfish.jimmer.sql.filter.FilterConfig;
import org.babyfish.jimmer.sql.filter.Filters;
import org.babyfish.jimmer.sql.filter.impl.FilterManager;
import org.babyfish.jimmer.sql.filter.impl.LogicalDeletedFilterProvider;
import org.babyfish.jimmer.sql.loader.graphql.Loaders;
import org.babyfish.jimmer.sql.loader.graphql.impl.LoadersImpl;
import org.babyfish.jimmer.sql.meta.*;
import org.babyfish.jimmer.sql.runtime.*;
import org.jetbrains.annotations.Nullable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Type;
import java.sql.SQLException;
import java.time.ZoneId;
import java.util.*;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReadWriteLock;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.function.Consumer;
import java.util.function.Function;
class JSqlClientImpl implements JSqlClientImplementor {
private final ConnectionManager connectionManager;
private final ConnectionManager slaveConnectionManager;
private final Dialect dialect;
private final Executor executor;
private final List executorContextPrefixes;
private final SqlFormatter sqlFormatter;
private final ZoneId zoneId;
private final Map, IdGenerator> idGeneratorMap;
private final ScalarProviderManager scalarProviderManager;
private final int defaultBatchSize;
private final int defaultListBatchSize;
private final boolean inListPaddingEnabled;
private final boolean expandedInListPaddingEnabled;
private final int offsetOptimizingThreshold;
private final LockMode defaultLockMode;
private final int maxCommandJoinCount;
private final boolean targetTransferable;
private final ExceptionTranslator exceptionTranslator;
private final EntitiesImpl entities;
private final EntityManager entityManager;
private final Caches caches;
private final TriggersImpl triggers;
private final TriggersImpl transactionTriggers;
private final MetadataStrategy metadataStrategy;
private final BinLog binLog;
private final UserIdGeneratorProvider userIdGeneratorProvider;
private final LogicalDeletedValueGeneratorProvider logicalDeletedValueGeneratorProvider;
private final TransientResolverManager transientResolverManager;
private final FilterManager filterManager;
private final boolean defaultDissociationActionCheckable;
private final IdOnlyTargetCheckingLevel idOnlyTargetCheckingLevel;
private final DraftPreProcessorManager draftPreProcessorManager;
private final DraftInterceptorManager draftInterceptorManager;
private final String microServiceName;
private final MicroServiceExchange microServiceExchange;
private final Loaders loaders = new LoadersImpl(this);
private final ReaderManager readerManager = new ReaderManager(this);
private final ClassCache uniqueConstraintCache = new ClassCache<>(this::createUniqueConstraintUsed);
private final SqlClientInitializer sqlClientInitializer;
private JSqlClientImpl(
ConnectionManager connectionManager,
ConnectionManager slaveConnectionManager,
Dialect dialect,
Executor executor,
List executorContextPrefixes,
SqlFormatter sqlFormatter,
ZoneId zoneId,
Map, IdGenerator> idGeneratorMap,
ScalarProviderManager scalarProviderManager,
int defaultBatchSize,
int defaultListBatchSize,
boolean inListPaddingEnabled,
boolean expandedInListPaddingEnabled,
int offsetOptimizingThreshold,
LockMode defaultLockMode,
int maxCommandJoinCount,
boolean targetTransferable,
ExceptionTranslator exceptionTranslator,
EntitiesImpl entities,
EntityManager entityManager,
Caches caches,
TriggersImpl triggers,
TriggersImpl transactionTriggers,
MetadataStrategy metadataStrategy,
BinLog binLog,
FilterManager filterManager,
UserIdGeneratorProvider userIdGeneratorProvider,
LogicalDeletedValueGeneratorProvider logicalDeletedValueGeneratorProvider,
TransientResolverManager transientResolverManager,
boolean defaultDissociationActionCheckable,
IdOnlyTargetCheckingLevel idOnlyTargetCheckingLevel,
DraftPreProcessorManager draftPreProcessorManager,
DraftInterceptorManager draftInterceptorManager,
String microServiceName,
MicroServiceExchange microServiceExchange,
SqlClientInitializer sqlClientInitializer
) {
this.connectionManager =
connectionManager != null ?
connectionManager :
ConnectionManager.EXTERNAL_ONLY;
this.slaveConnectionManager = slaveConnectionManager;
this.dialect = dialect;
this.executor =
executor != null ?
executor :
DefaultExecutor.INSTANCE;
this.executorContextPrefixes =
executorContextPrefixes != null ?
Collections.unmodifiableList(executorContextPrefixes) :
null;
this.sqlFormatter = sqlFormatter;
this.zoneId = zoneId != null ? zoneId : ZoneId.systemDefault();
this.idGeneratorMap = idGeneratorMap;
this.scalarProviderManager = scalarProviderManager;
this.defaultBatchSize = defaultBatchSize;
this.defaultListBatchSize = defaultListBatchSize;
this.inListPaddingEnabled = inListPaddingEnabled;
this.expandedInListPaddingEnabled = expandedInListPaddingEnabled;
this.offsetOptimizingThreshold = offsetOptimizingThreshold;
this.defaultLockMode = defaultLockMode;
this.maxCommandJoinCount = maxCommandJoinCount;
this.targetTransferable = targetTransferable;
this.exceptionTranslator = exceptionTranslator;
this.entities =
entities != null ?
entities.forSqlClient(this) :
new EntitiesImpl(this);
this.entityManager = entityManager;
this.caches = caches;
this.triggers = triggers;
this.transactionTriggers = transactionTriggers;
this.metadataStrategy = metadataStrategy;
this.binLog = binLog;
this.filterManager = filterManager;
this.userIdGeneratorProvider =
userIdGeneratorProvider != null ?
userIdGeneratorProvider :
new DefaultUserIdGeneratorProvider();
this.logicalDeletedValueGeneratorProvider =
logicalDeletedValueGeneratorProvider != null ?
logicalDeletedValueGeneratorProvider :
new DefaultLogicalDeletedValueGeneratorProvider();
this.transientResolverManager = transientResolverManager;
this.defaultDissociationActionCheckable = defaultDissociationActionCheckable;
this.idOnlyTargetCheckingLevel = idOnlyTargetCheckingLevel;
this.draftPreProcessorManager = draftPreProcessorManager;
this.draftInterceptorManager = draftInterceptorManager;
this.microServiceName = microServiceName;
this.microServiceExchange = microServiceExchange;
this.sqlClientInitializer = sqlClientInitializer;
}
@Override
public ConnectionManager getConnectionManager() {
return connectionManager;
}
@Override
public ConnectionManager getSlaveConnectionManager(boolean forUpdate) {
ConnectionManager slave = slaveConnectionManager;
if (slave != null && !forUpdate) {
return slave;
}
return connectionManager;
}
@Override
public Dialect getDialect() {
return dialect;
}
@Override
public Executor getExecutor() {
return executor;
}
@Override
public List getExecutorContextPrefixes() {
return executorContextPrefixes;
}
@Override
public SqlFormatter getSqlFormatter() {
return sqlFormatter;
}
@SuppressWarnings("unchecked")
@Override
public ScalarProvider getScalarProvider(Class scalarType) {
return (ScalarProvider) scalarProviderManager.getProvider(scalarType);
}
@SuppressWarnings("unchecked")
@Override
public ScalarProvider getScalarProvider(TypedProp prop) {
return (ScalarProvider) scalarProviderManager.getProvider(prop.unwrap());
}
@SuppressWarnings("unchecked")
public ScalarProvider getScalarProvider(ImmutableProp prop) {
return (ScalarProvider) scalarProviderManager.getProvider(prop);
}
@Override
public ZoneId getZoneId() {
return zoneId;
}
@Override
public IdGenerator getIdGenerator(Class entityType) {
IdGenerator userIdGenerator = idGeneratorMap.get(entityType);
if (userIdGenerator == null) {
userIdGenerator = idGeneratorMap.get(null);
if (userIdGenerator == null) {
userIdGenerator = ImmutableType.get(entityType).getIdGenerator(this);
}
}
return userIdGenerator;
}
@Override
public T unwrap() {
return null;
}
@Override
public UserIdGenerator getUserIdGenerator(String ref) throws Exception {
return userIdGeneratorProvider.get(ref, this);
}
@SuppressWarnings("unchecked")
@Override
public UserIdGenerator getUserIdGenerator(Class userIdGeneratorType) throws Exception {
return userIdGeneratorProvider.get((Class>) userIdGeneratorType, this);
}
@Override
public LogicalDeletedValueGenerator getLogicalDeletedValueGenerator(String ref) throws Exception {
return logicalDeletedValueGeneratorProvider.get(ref, this);
}
@SuppressWarnings("unchecked")
@Override
public LogicalDeletedValueGenerator getLogicalDeletedValueGenerator(Class logicalDeletedValueGeneratorType) throws Exception {
return logicalDeletedValueGeneratorProvider.get((Class>) logicalDeletedValueGeneratorType, this);
}
@Override
public int getDefaultBatchSize() {
return defaultBatchSize;
}
@Override
public int getDefaultListBatchSize() {
return defaultListBatchSize;
}
@Override
public boolean isInListPaddingEnabled() {
return inListPaddingEnabled;
}
@Override
public boolean isExpandedInListPaddingEnabled() {
return expandedInListPaddingEnabled;
}
@Override
public int getOffsetOptimizingThreshold() {
return offsetOptimizingThreshold;
}
@Override
public LockMode getDefaultLockMode() {
return defaultLockMode;
}
@Override
public int getMaxCommandJoinCount() {
return maxCommandJoinCount;
}
@Override
public boolean isTargetTransferable() {
return targetTransferable;
}
@Override
public boolean isUpsertWithUniqueConstraintSupported(ImmutableType type) {
return uniqueConstraintCache.get(type.getJavaClass());
}
@Override
@Nullable
public ExceptionTranslator getExceptionTranslator() {
return exceptionTranslator;
}
@Override
public > MutableRootQuery createQuery(T table) {
if (table instanceof TableEx) {
throw new IllegalArgumentException("Top-level query does not support TableEx");
}
return new MutableRootQueryImpl<>(
this,
table,
ExecutionPurpose.QUERY,
FilterLevel.DEFAULT
);
}
@Override
public MutableUpdate createUpdate(TableProxy table) {
return new MutableUpdateImpl(this, table);
}
@Override
public MutableDelete createDelete(TableProxy table) {
return new MutableDeleteImpl(this, table);
}
@Override
public , TE, TT extends Table>
MutableRootQuery> createAssociationQuery(
AssociationTable table
) {
if (!(table instanceof TableProxy)) {
throw new IllegalArgumentException("The argument \"table\" must be proxy");
}
return new MutableRootQueryImpl<>(
this,
(TableProxy) table,
ExecutionPurpose.QUERY,
FilterLevel.DEFAULT
);
}
@Override
public MutableSubQuery createSubQuery(TableProxy table) {
return new MutableSubQueryImpl(this, table);
}
@Override
public , TE, TT extends TableEx>
MutableSubQuery createAssociationSubQuery(AssociationTable table) {
if (!(table instanceof TableProxy)) {
throw new IllegalArgumentException("The argument \"table\" must be proxy");
}
return new MutableSubQueryImpl(this, (TableProxy) table);
}
@Override
public Entities getEntities() {
return entities;
}
@Override
public CacheOperator getCacheOperator() {
return ((CachesImpl)caches).getOperator();
}
@Override
public TriggerType getTriggerType() {
if (transactionTriggers == null) {
return TriggerType.BINLOG_ONLY;
}
if (transactionTriggers == triggers) {
return TriggerType.TRANSACTION_ONLY;
}
return TriggerType.BOTH;
}
@Override
public Triggers getTriggers() {
return triggers;
}
@Override
public Triggers getTriggers(boolean transaction) {
if (transaction) {
Triggers tt = this.transactionTriggers;
if (tt == null) {
throw new IllegalStateException("Transaction triggers is not supported by current sql client");
}
return tt;
}
return triggers;
}
@Override
public MetadataStrategy getMetadataStrategy() {
return metadataStrategy;
}
@Override
public BinLog getBinLog() {
BinLog bl = binLog;
if (bl == null) {
throw new IllegalStateException("binLog is not supported because the entityManager of sql client is not specified");
}
return bl;
}
@Override
public Associations getAssociations(TypedProp.Association prop) {
return getAssociations(prop.unwrap());
}
@Override
public Associations getAssociations(ImmutableProp immutableProp) {
return getAssociations(AssociationType.of(immutableProp));
}
@Override
public Associations getAssociations(AssociationType associationType) {
return new AssociationsImpl(this, null, associationType);
}
@Override
public Loaders getLoaders() {
return loaders;
}
@Override
public EntityManager getEntityManager() {
return entityManager;
}
@Override
public Caches getCaches() {
return caches;
}
@Override
public JSqlClientImplementor caches(Consumer block) {
if (block == null) {
throw new IllegalArgumentException("block cannot be null");
}
CacheDisableConfig cfg = new CacheDisableConfig();
block.accept(cfg);
return new JSqlClientImpl(
connectionManager,
slaveConnectionManager,
dialect,
executor,
executorContextPrefixes,
sqlFormatter,
zoneId,
idGeneratorMap,
scalarProviderManager,
defaultBatchSize,
defaultListBatchSize,
inListPaddingEnabled,
expandedInListPaddingEnabled,
offsetOptimizingThreshold,
defaultLockMode,
maxCommandJoinCount,
targetTransferable,
exceptionTranslator,
entities,
entityManager,
new CachesImpl((CachesImpl) caches, cfg),
triggers,
transactionTriggers,
metadataStrategy,
binLog,
filterManager,
userIdGeneratorProvider,
logicalDeletedValueGeneratorProvider,
transientResolverManager,
defaultDissociationActionCheckable,
idOnlyTargetCheckingLevel,
draftPreProcessorManager,
draftInterceptorManager,
microServiceName,
microServiceExchange,
sqlClientInitializer
);
}
@Override
public JSqlClientImplementor filters(Consumer block) {
if (block == null) {
throw new IllegalArgumentException("block cannot be null");
}
FilterConfig cfg = new FilterConfig(filterManager);
block.accept(cfg);
if (cfg.getFilterManager() == filterManager) {
return this;
}
return new JSqlClientImpl(
connectionManager,
slaveConnectionManager,
dialect,
executor,
executorContextPrefixes,
sqlFormatter,
zoneId,
idGeneratorMap,
scalarProviderManager,
defaultBatchSize,
defaultListBatchSize,
inListPaddingEnabled,
expandedInListPaddingEnabled,
offsetOptimizingThreshold,
defaultLockMode,
maxCommandJoinCount,
targetTransferable,
exceptionTranslator,
entities,
entityManager,
caches,
triggers,
transactionTriggers,
metadataStrategy,
binLog,
cfg.getFilterManager(),
userIdGeneratorProvider,
logicalDeletedValueGeneratorProvider,
transientResolverManager,
defaultDissociationActionCheckable,
idOnlyTargetCheckingLevel,
draftPreProcessorManager,
draftInterceptorManager,
microServiceName,
microServiceExchange,
sqlClientInitializer
);
}
@Override
public JSqlClientImplementor disableSlaveConnectionManager() {
if (slaveConnectionManager == null) {
return this;
}
return new JSqlClientImpl(
connectionManager,
null,
dialect,
executor,
executorContextPrefixes,
sqlFormatter,
zoneId,
idGeneratorMap,
scalarProviderManager,
defaultBatchSize,
defaultListBatchSize,
inListPaddingEnabled,
expandedInListPaddingEnabled,
offsetOptimizingThreshold,
defaultLockMode,
maxCommandJoinCount,
targetTransferable,
exceptionTranslator,
entities,
entityManager,
caches,
triggers,
transactionTriggers,
metadataStrategy,
binLog,
filterManager,
userIdGeneratorProvider,
logicalDeletedValueGeneratorProvider,
transientResolverManager,
defaultDissociationActionCheckable,
idOnlyTargetCheckingLevel,
draftPreProcessorManager,
draftInterceptorManager,
microServiceName,
microServiceExchange,
sqlClientInitializer
);
}
@Override
public JSqlClientImplementor executor(Executor executor) {
if (executor == null) {
executor = DefaultExecutor.INSTANCE;
}
if (this.executor.equals(executor)) {
return this;
}
return new JSqlClientImpl(
connectionManager,
slaveConnectionManager,
dialect,
executor,
executorContextPrefixes,
sqlFormatter,
zoneId,
idGeneratorMap,
scalarProviderManager,
defaultBatchSize,
defaultListBatchSize,
inListPaddingEnabled,
expandedInListPaddingEnabled,
offsetOptimizingThreshold,
defaultLockMode,
maxCommandJoinCount,
targetTransferable,
exceptionTranslator,
entities,
entityManager,
caches,
triggers,
transactionTriggers,
metadataStrategy,
binLog,
filterManager,
userIdGeneratorProvider,
logicalDeletedValueGeneratorProvider,
transientResolverManager,
defaultDissociationActionCheckable,
idOnlyTargetCheckingLevel,
draftPreProcessorManager,
draftInterceptorManager,
microServiceName,
microServiceExchange,
sqlClientInitializer
);
}
@Override
public TransientResolver getResolver(ImmutableProp prop) {
return transientResolverManager.get(prop);
}
@Override
public UserIdGeneratorProvider getUserIdGeneratorProvider() {
return userIdGeneratorProvider;
}
@Override
public StrategyProvider> getTransientResolverProvider() {
return transientResolverManager.getTransientResolverProvider();
}
@Override
public Filters getFilters() {
return filterManager;
}
@Override
public boolean isDefaultDissociationActionCheckable() {
return defaultDissociationActionCheckable;
}
@Override
public IdOnlyTargetCheckingLevel getIdOnlyTargetCheckingLevel() {
return idOnlyTargetCheckingLevel;
}
@Override
public DraftPreProcessor getDraftPreProcessor(ImmutableType type) {
return draftPreProcessorManager.get(type);
}
@Nullable
@Override
public DraftInterceptor getDraftInterceptor(ImmutableType type) {
return draftInterceptorManager.get(type);
}
@Override
public Reader getReader(Class type) {
return readerManager.reader(type);
}
@Override
public Reader getReader(ImmutableType type) {
return readerManager.reader(type);
}
@Override
public Reader getReader(ImmutableProp prop) {
return readerManager.reader(prop);
}
@Override
public String getMicroServiceName() {
return microServiceName;
}
@Override
public MicroServiceExchange getMicroServiceExchange() {
return microServiceExchange;
}
private Boolean createUniqueConstraintUsed(Class type) {
KeyUniqueConstraint keyUniqueConstraint = type.getAnnotation(KeyUniqueConstraint.class);
if (keyUniqueConstraint == null) {
return false;
}
ImmutableType immutableType = ImmutableType.get(type);
Map> keyGroupMap = immutableType.getKeyMatcher().toMap();
if (keyGroupMap.isEmpty()) {
throw new ModelException(
"Illegal type \"" +
immutableType +
"\", it cannot be decorated by \"@" +
KeyUniqueConstraint.class.getName() +
"\" because it have no property decorated by \"@" +
Key.class +
"\""
);
}
if (keyUniqueConstraint.noMoreUniqueConstraints() && keyGroupMap.size() > 1) {
throw new ModelException(
"Illegal type \"" +
immutableType +
"\", the argument `noMoreUniqueConstraints` of \"@" +
KeyUniqueConstraint.class.getName() +
"\" cannot be true because its properties belong to several key groups " +
keyGroupMap.keySet()
);
}
return getDialect().isUpsertWithMultipleUniqueConstraintSupported() ||
keyUniqueConstraint.noMoreUniqueConstraints();
}
@Override
public void initialize() {
if (sqlClientInitializer != null) {
sqlClientInitializer.initialize();
}
}
public static class BuilderImpl implements JSqlClientImplementor.Builder {
private static final Logger LOGGER = LoggerFactory.getLogger(BuilderImpl.class);
private ConnectionManager connectionManager;
private ConnectionManager slaveConnectionManager;
private Dialect dialect = DefaultDialect.INSTANCE;
private Executor executor;
private List executorContextPrefixes;
private SqlFormatter sqlFormatter = SqlFormatter.SIMPLE;
private ZoneId zoneId;
private UserIdGeneratorProvider userIdGeneratorProvider;
private LogicalDeletedValueGeneratorProvider logicalDeletedValueGeneratorProvider;
private TransientResolverProvider transientResolverProvider;
private final Map, ScalarProvider> typeScalarProviderMap = new HashMap<>();
private final Map> propScalarProviderMap = new HashMap<>();
private final Map, ObjectMapper> serializedTypeObjectMapperMap = new HashMap<>();
private final Map serializedPropObjectMapperMap = new HashMap<>();
private Function> defaultJsonProviderCreator;
private final Map, IdGenerator> idGeneratorMap = new HashMap<>();
private EnumType.Strategy defaultEnumStrategy = EnumType.Strategy.NAME;
private DatabaseNamingStrategy databaseNamingStrategy = DefaultDatabaseNamingStrategy.UPPER_CASE;
private MetaStringResolver metaStringResolver = MetaStringResolver.NO_OP;
private int defaultBatchSize = DEFAULT_BATCH_SIZE;
private int defaultListBatchSize = DEFAULT_LIST_BATCH_SIZE;
private boolean inListPaddingEnabled;
private boolean expandedInListPaddingEnabled;
private int offsetOptimizingThreshold = Integer.MAX_VALUE;
private LockMode defaultLockMode = LockMode.OPTIMISTIC;
private int maxCommandJoinCount = 2;
private EntityManager userEntityManager;
private EntityManager defaultEntityManager;
private final CacheConfig cacheConfig = new CacheConfig();
private TriggerType triggerType = TriggerType.BINLOG_ONLY;
private TriggersImpl triggers;
private TriggersImpl transactionTriggers;
private LogicalDeletedBehavior logicalDeletedBehavior = LogicalDeletedBehavior.DEFAULT;
private final List> filters = new ArrayList<>();
private final Set> disabledFilters = new HashSet<>();
private boolean defaultDissociationActionCheckable = true;
private IdOnlyTargetCheckingLevel idOnlyTargetCheckingLevel =
IdOnlyTargetCheckingLevel.NONE;
private boolean saveCommandPessimisticLock = false;
private final Collection> processors = new ArrayList<>();
private final List> interceptors = new ArrayList<>();
private ObjectMapper binLogObjectMapper;
private final Map binLogPropReaderMap = new HashMap<>();
private final Map, BinLogPropReader> typeBinLogPropReaderMap = new HashMap<>();
private boolean isForeignKeyEnabledByDefault = true;
private boolean targetTransferable;
private final Set> exceptionTranslators = new LinkedHashSet<>();
private final Set customizers = new LinkedHashSet<>();
private final Set initializers = new LinkedHashSet<>();
private DatabaseValidationMode databaseValidationMode = DatabaseValidationMode.NONE;
private String databaseValidationCatalog;
private String databaseValidationSchema;
private AopProxyProvider aopProxyProvider;
private String microServiceName = "";
private MicroServiceExchange microServiceExchange;
private InitializationType initializationType = InitializationType.IMMEDIATE;
public BuilderImpl() {}
@Override
public ConnectionManager getConnectionManager() {
return connectionManager;
}
@Override
public Dialect getDialect() {
return dialect;
}
@Override
@OldChain
public JSqlClient.Builder setConnectionManager(ConnectionManager connectionManager) {
this.connectionManager = connectionManager;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setSlaveConnectionManager(ConnectionManager connectionManager) {
this.slaveConnectionManager = connectionManager;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setDialect(Dialect dialect) {
this.dialect = dialect != null ? dialect : DefaultDialect.INSTANCE;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setExecutor(Executor executor) {
this.executor = executor;
return this;
}
@Override
@OldChain
public Builder setExecutorContextPrefixes(Collection prefixes) {
if (prefixes == null || prefixes.isEmpty()) {
executorContextPrefixes = null;
} else {
Set set = new TreeSet<>();
for (String prefix : prefixes) {
if (prefix != null && !prefix.isEmpty()) {
set.add(prefix);
}
}
if (set.isEmpty()) {
executorContextPrefixes = null;
} else {
executorContextPrefixes = new ArrayList<>(set);
}
}
return this;
}
@Override
@OldChain
public Builder setSqlFormatter(SqlFormatter sqlFormatter) {
this.sqlFormatter = sqlFormatter != null ? sqlFormatter : SqlFormatter.SIMPLE;
return this;
}
@Override
public JSqlClient.Builder setZoneId(@Nullable ZoneId zoneId) {
this.zoneId = zoneId;
return this;
}
@Override
@OldChain
public Builder setUserIdGeneratorProvider(UserIdGeneratorProvider userIdGeneratorProvider) {
this.userIdGeneratorProvider = userIdGeneratorProvider;
return this;
}
@Override
@OldChain
public Builder setLogicalDeletedValueGeneratorProvider(LogicalDeletedValueGeneratorProvider logicalDeletedValueGeneratorProvider) {
this.logicalDeletedValueGeneratorProvider = logicalDeletedValueGeneratorProvider;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setTransientResolverProvider(TransientResolverProvider transientResolverProvider) {
this.transientResolverProvider = transientResolverProvider;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setIdGenerator(IdGenerator idGenerator) {
return setIdGenerator(null, idGenerator);
}
@Override
@OldChain
public JSqlClient.Builder setIdGenerator(Class entityType, IdGenerator idGenerator) {
idGeneratorMap.put(entityType, idGenerator);
return this;
}
@Override
@OldChain
public JSqlClient.Builder addScalarProvider(ScalarProvider scalarProvider) {
Collection props = scalarProvider.getHandledProps();
if (props == null || props.isEmpty()) {
addScalarProviderImpl(null, scalarProvider);
} else {
for (ImmutableProp prop : props) {
if (prop == null) {
throw new IllegalStateException(
"Each property of returned list of \"" +
scalarProvider.getClass().getName() +
".getHandledProps" +
"\" cannot be null"
);
}
if (!prop.isScalar(TargetLevel.ENTITY) && !prop.isScalarList()) {
throw new IllegalStateException(
"Each property of returned list of \"" +
scalarProvider.getClass().getName() +
".getHandledProps" +
"\" must be scalar, but \"" +
prop +
"\" is not"
);
}
addScalarProviderImpl(prop, scalarProvider);
}
}
return this;
}
@Override
public Builder setScalarProvider(TypedProp prop, ScalarProvider scalarProvider) {
if (prop == null) {
throw new IllegalArgumentException("prop cannot be null");
}
addScalarProviderImpl(prop.unwrap(), scalarProvider);
return this;
}
@Override
public Builder setScalarProvider(ImmutableProp prop, ScalarProvider scalarProvider) {
if (prop == null) {
throw new IllegalArgumentException("prop cannot be null");
}
addScalarProviderImpl(prop, scalarProvider);
return this;
}
private void addScalarProviderImpl(ImmutableProp prop, ScalarProvider scalarProvider) {
Type scalarType = scalarProvider.getScalarType();
if (prop == null) {
if (!(scalarType instanceof Class)) {
throw new IllegalStateException(
"Illegal scalar provider type \"" +
scalarProvider.getClass().getName() +
"\" its scalar type argument cannot be \"" +
scalarType +
"\" because it is global scalar provider, " +
"please use property-specific scalar provider"
);
}
if (typeScalarProviderMap.containsKey(scalarType)) {
throw new IllegalStateException(
"Cannot set scalar provider for scalar type \"" +
scalarType +
"\" twice"
);
}
if (((Class) scalarType).isArray() ||
Iterable.class.isAssignableFrom((Class) scalarType) ||
Map.class.isAssignableFrom((Class) scalarType)) {
throw new IllegalStateException(
"Illegal scalar provider type \"" +
scalarProvider.getClass().getName() +
"\" its scalar type argument cannot be array, collection or map," +
" because it is global scalar provider, " +
"please use property-specific scalar provider"
);
}
typeScalarProviderMap.put((Class) scalarType, scalarProvider);
} else {
if (!prop.isScalar(TargetLevel.ENTITY) && !prop.isScalarList()) {
throw new IllegalStateException(
"Cannot set scalar provider for property type \"" +
prop +
"\" because the property is not scalar property"
);
}
if (propScalarProviderMap.containsKey(prop)) {
throw new IllegalStateException(
"Cannot set scalar provider for property type \"" +
prop +
"\" twice"
);
}
ImmutableProp originalProp = prop.toOriginal();
if (originalProp != prop) {
throw new IllegalArgumentException(
"\"" +
prop +
"\" hides \"" +
originalProp +
"\", please add scalar provider for that hidden property"
);
}
propScalarProviderMap.put(prop, scalarProvider);
}
}
@Override
public Builder setDefaultSerializedTypeObjectMapper(ObjectMapper mapper) {
return setSerializedTypeObjectMapper(Object.class, mapper);
}
@Override
public Builder setSerializedTypeObjectMapper(Class type, ObjectMapper mapper) {
serializedTypeObjectMapperMap.put(type != null ? type : Object.class, mapper);
return this;
}
@Override
public Builder setSerializedPropObjectMapper(TypedProp prop, ObjectMapper mapper) {
return setSerializedPropObjectMapper(prop.unwrap(), mapper);
}
@Override
public Builder setSerializedPropObjectMapper(ImmutableProp prop, ObjectMapper mapper) {
if (prop.getAnnotation(Serialized.class) == null) {
throw new IllegalArgumentException(
"Cannot set the serialized property object mapper for \"" +
prop +
"\" because it is not decorated by \"@" +
Serialized.class.getName() +
"\""
);
}
serializedPropObjectMapperMap.put(prop, mapper);
return this;
}
@Override
public JSqlClient.Builder setDefaultJsonProviderCreator(Function> creator) {
this.defaultJsonProviderCreator = creator;
return this;
}
@Override
public Builder setDefaultEnumStrategy(EnumType.Strategy strategy) {
this.defaultEnumStrategy = strategy != null ? strategy : EnumType.Strategy.NAME;
return this;
}
@Override
public Builder setDatabaseNamingStrategy(DatabaseNamingStrategy strategy) {
this.databaseNamingStrategy = strategy != null ? strategy : DefaultDatabaseNamingStrategy.UPPER_CASE;
return this;
}
@Override
public JSqlClient.Builder setMetaStringResolver(MetaStringResolver resolver) {
this.metaStringResolver = resolver != null ? resolver : MetaStringResolver.NO_OP;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setDefaultBatchSize(int size) {
if (size < 1) {
throw new IllegalStateException("size cannot be less than 1");
}
defaultBatchSize = size;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setDefaultListBatchSize(int size) {
if (size < 1) {
throw new IllegalStateException("size cannot be less than 1");
}
defaultListBatchSize = size;
return this;
}
@Override
public JSqlClient.Builder setInListPaddingEnabled(boolean enabled) {
this.inListPaddingEnabled = enabled;
return this;
}
@Override
public JSqlClient.Builder setExpandedInListPaddingEnabled(boolean enabled) {
this.expandedInListPaddingEnabled = enabled;
return this;
}
@Override
public Builder setOffsetOptimizingThreshold(int threshold) {
if (threshold < 0) {
throw new IllegalArgumentException("`threshold` cannot be negative number");
}
offsetOptimizingThreshold = threshold;
return this;
}
@Override
public Builder setDefaultLockMode(LockMode defaultLockMode) {
if (defaultLockMode == LockMode.AUTO) {
throw new IllegalArgumentException("The default lock mode cannot be `AUTO`");
}
this.defaultLockMode = defaultLockMode != null ? defaultLockMode : LockMode.OPTIMISTIC;
return this;
}
@Override
public JSqlClient.Builder setMaxCommandJoinCount(int maxCommandJoinCount) {
this.maxCommandJoinCount = maxCommandJoinCount;
return this;
}
@Override
@OldChain
public Builder setEntityManager(EntityManager entityManager) {
if (this.userEntityManager != null && this.userEntityManager != entityManager) {
throw new IllegalStateException(
"The EntityManager of SqlBuilder.Builder can only be set once"
);
}
this.userEntityManager = entityManager;
return this;
}
@Override
@OldChain
public JSqlClient.Builder setCaches(Consumer block) {
block.accept(cacheConfig);
return this;
}
@Override
public Builder setCacheFactory(CacheFactory cacheFactory) {
cacheConfig.setCacheFactory(cacheFactory);
return this;
}
@Override
public Builder setCacheOperator(CacheOperator cacheOperator) {
cacheConfig.setCacheOperator(cacheOperator);
return this;
}
@Override
public Builder addCacheAbandonedCallback(CacheAbandonedCallback callback) {
cacheConfig.addAbandonedCallback(callback);
return this;
}
@Override
public Builder addCacheAbandonedCallbacks(Collection callbacks) {
cacheConfig.addAbandonedCallbacks(callbacks);
return this;
}
@Override
public Builder setTriggerType(TriggerType triggerType) {
this.triggerType = triggerType != null ? triggerType : TriggerType.BINLOG_ONLY;
return this;
}
@Override
public Builder setLogicalDeletedBehavior(LogicalDeletedBehavior behavior) {
this.logicalDeletedBehavior = behavior != null ? behavior : LogicalDeletedBehavior.DEFAULT;
return this;
}
@Override
public Builder addFilters(Filter... filters) {
return addFilters(Arrays.asList(filters));
}
@Override
public Builder addFilters(Collection> filters) {
for (Filter filter : filters) {
if (filter != null) {
if (filter instanceof FilterManager.Exported) {
throw new IllegalArgumentException("Cannot add filter which is exported by filter manager");
}
this.filters.add(filter);
}
}
return this;
}
@Override
public Builder addDisabledFilters(Filter... filters) {
return addDisabledFilters(Arrays.asList(filters));
}
@Override
public Builder addDisabledFilters(Collection> filters) {
for (Filter filter : filters) {
if (filter != null) {
this.filters.add(filter);
this.disabledFilters.add(filter);
}
}
return this;
}
@Override
public Builder setDefaultDissociateActionCheckable(boolean checkable) {
defaultDissociationActionCheckable = checkable;
return this;
}
@Override
public Builder setIdOnlyTargetCheckingLevel(IdOnlyTargetCheckingLevel checkingLevel) {
idOnlyTargetCheckingLevel = checkingLevel != null ?
checkingLevel :
IdOnlyTargetCheckingLevel.NONE;
return this;
}
@Override
public JSqlClient.Builder addDraftPreProcessor(DraftPreProcessor processor) {
return addDraftPreProcessors(Collections.singleton(processor));
}
@Override
public JSqlClient.Builder addDraftPreProcessors(DraftPreProcessor... processors) {
return addDraftPreProcessors(Arrays.asList(processors));
}
@Override
public JSqlClient.Builder addDraftPreProcessors(Collection> processors) {
for (DraftPreProcessor processor : processors) {
if (processor != null) {
this.processors.add(processor);
}
}
return this;
}
@Override
public Builder addDraftInterceptor(DraftInterceptor interceptor) {
return addDraftInterceptors(Collections.singletonList(interceptor));
}
@Override
public Builder addDraftInterceptors(DraftInterceptor... interceptors) {
return addDraftInterceptors(Arrays.asList(interceptors));
}
@Override
public Builder addDraftInterceptors(Collection> interceptors) {
for (DraftInterceptor interceptor : interceptors) {
if (interceptor != null) {
this.interceptors.add(interceptor);
}
}
return this;
}
@Override
public Builder setDefaultBinLogObjectMapper(ObjectMapper mapper) {
this.binLogObjectMapper = mapper;
return this;
}
@Override
public Builder setBinLogPropReader(ImmutableProp prop, BinLogPropReader reader) {
if (prop.isEmbedded(EmbeddedLevel.BOTH)) {
throw new IllegalArgumentException(
"Cannot set bin log reader for embedded property \"" +
prop +
"\""
);
}
if (!prop.isScalar(TargetLevel.ENTITY)) {
throw new IllegalArgumentException(
"Cannot set bin log reader for non-scalar property \"" +
prop +
"\""
);
}
if (!prop.isColumnDefinition()) {
throw new IllegalArgumentException(
"Cannot set bin log reader for property \"" +
prop +
"\" which is not column definition"
);
}
if (prop instanceof AssociationProp) {
throw new IllegalArgumentException(
"Cannot set bin log reader for association property \"" +
prop +
"\""
);
}
binLogPropReaderMap.put(prop, reader);
return this;
}
@Override
public Builder setBinLogPropReader(TypedProp.Scalar prop, BinLogPropReader reader) {
return setBinLogPropReader(prop.unwrap(), reader);
}
@Override
public Builder setBinLogPropReader(Class propType, BinLogPropReader reader) {
if (propType == void.class) {
throw new IllegalArgumentException(
"Cannot set bin log reader for void type"
);
}
typeBinLogPropReaderMap.put(propType, reader);
return this;
}
@Override
public Builder setForeignKeyEnabledByDefault(boolean enabled) {
this.isForeignKeyEnabledByDefault = enabled;
return this;
}
@Override
public Builder setTargetTransferable(boolean targetTransferable) {
this.targetTransferable = targetTransferable;
return this;
}
@OldChain
public Builder addExceptionTranslator(ExceptionTranslator translator) {
if (translator != null) {
this.exceptionTranslators.add(translator);
}
return this;
}
@OldChain
public Builder addExceptionTranslators(Collection> translators) {
for (ExceptionTranslator translator : translators) {
if (translator != null) {
this.exceptionTranslators.add(translator);
}
}
return this;
}
@Override
public Builder addCustomizers(Customizer... customizers) {
for (Customizer customizer : customizers) {
if (customizer != null) {
this.customizers.add(customizer);
}
}
return this;
}
@Override
public Builder addCustomizers(Collection customizers) {
for (Customizer customizer : customizers) {
if (customizer != null) {
this.customizers.add(customizer);
}
}
return this;
}
@Override
public Builder addInitializers(Initializer ... initializers) {
for (Initializer initializer : initializers) {
if (initializer != null) {
this.initializers.add(initializer);
}
}
return this;
}
@Override
public Builder addInitializers(Collection initializers) {
for (Initializer initializer : initializers) {
if (initializer != null) {
this.initializers.add(initializer);
}
}
return this;
}
@Override
public Builder setDatabaseValidationMode(DatabaseValidationMode databaseValidationMode) {
this.databaseValidationMode = Objects.requireNonNull(
databaseValidationMode,
"argument cannot be null"
);
return this;
}
@Override
public Builder setDatabaseValidationCatalog(String catalog) {
this.databaseValidationCatalog = catalog != null && !catalog.isEmpty() ? catalog : null;
return this;
}
@Override
public Builder setDatabaseValidationSchema(String schema) {
this.databaseValidationSchema = schema != null && !schema.isEmpty() ? schema : null;
return this;
}
@Override
public Builder setAopProxyProvider(AopProxyProvider provider) {
this.aopProxyProvider = aopProxyProvider;
return this;
}
@Override
public Builder setMicroServiceName(String microServiceName) {
this.microServiceName = microServiceName != null ? microServiceName : "";
return this;
}
@Override
public Builder setMicroServiceExchange(MicroServiceExchange exchange) {
this.microServiceExchange = exchange;
return this;
}
@Override
public Builder setInitializationType(InitializationType type) {
this.initializationType = type != null ? type : InitializationType.IMMEDIATE;
return this;
}
@Override
public JSqlClient build() {
if (!microServiceName.isEmpty() && microServiceExchange == null) {
throw new IllegalStateException(
"The `microServiceExchange` must be configured when `microServiceName` is configured"
);
}
for (Customizer customizer : customizers) {
try {
customizer.customize(this);
} catch (Exception ex) {
throw new ExecutionException(
"Failed to execute customizer before create sql client",
ex
);
}
}
ForeignKeyStrategy foreignKeyStrategy;
if (!dialect.isForeignKeySupported()) {
foreignKeyStrategy = ForeignKeyStrategy.FORCED_FAKE;
} else if (isForeignKeyEnabledByDefault) {
foreignKeyStrategy = ForeignKeyStrategy.REAL;
} else {
foreignKeyStrategy = ForeignKeyStrategy.FAKE;
}
ScalarProviderManager scalarProviderManager = new ScalarProviderManager(
typeScalarProviderMap,
propScalarProviderMap,
serializedTypeObjectMapperMap,
serializedPropObjectMapperMap,
defaultJsonProviderCreator,
defaultEnumStrategy,
dialect
);
MetadataStrategy metadataStrategy =
new MetadataStrategy(
databaseNamingStrategy,
foreignKeyStrategy,
dialect,
scalarProviderManager,
metaStringResolver
);
entityManager().validate(metadataStrategy);
FilterManager filterManager = createFilterManager();
validateAssociations(filterManager);
createTriggers();
Caches caches = CachesImpl.of(
cacheConfig,
microServiceName,
entityManager(),
triggers,
filterManager
);
BinLogParser binLogParser = new BinLogParser();
BinLog binLog = new BinLogImpl(
entityManager(),
microServiceName,
metadataStrategy,
binLogParser,
triggers
);
TransientResolverManager transientResolverManager =
new TransientResolverManager(
transientResolverProvider != null ?
transientResolverProvider :
DefaultTransientResolverProvider.INSTANCE,
aopProxyProvider
);
SqlClientInitializer sqlClientInitializer = null;
if (initializationType == InitializationType.MANUAL) {
sqlClientInitializer = new SqlClientInitializer();
}
JSqlClientImplementor sqlClient = new JSqlClientImpl(
connectionManager,
slaveConnectionManager,
dialect,
executor,
executorContextPrefixes,
sqlFormatter,
zoneId,
idGeneratorMap,
scalarProviderManager,
defaultBatchSize,
defaultListBatchSize,
inListPaddingEnabled,
expandedInListPaddingEnabled,
offsetOptimizingThreshold,
defaultLockMode,
maxCommandJoinCount,
targetTransferable,
ExceptionTranslator.of(exceptionTranslators),
null,
entityManager(),
caches,
triggers,
transactionTriggers,
metadataStrategy,
binLog,
filterManager,
userIdGeneratorProvider,
logicalDeletedValueGeneratorProvider,
transientResolverManager,
defaultDissociationActionCheckable,
idOnlyTargetCheckingLevel,
new DraftPreProcessorManager(processors),
new DraftInterceptorManager(interceptors),
microServiceName,
microServiceExchange,
sqlClientInitializer
);
Runnable initializationAction = () -> {
CachesImpl.initialize(caches, sqlClient);
filterManager.initialize(sqlClient);
binLogParser.initialize(sqlClient, binLogObjectMapper, binLogPropReaderMap, typeBinLogPropReaderMap);
transientResolverManager.initialize(sqlClient);
triggers.initialize(sqlClient);
if (transactionTriggers != null && transactionTriggers != triggers) {
transactionTriggers.initialize(sqlClient);
}
for (Initializer initializer : initializers) {
try {
initializer.initialize(sqlClient);
} catch (Exception ex) {
throw new ExecutionException(
"Failed to execute initializer after create sql client",
ex
);
}
}
validateDatabase(metadataStrategy);
};
if (sqlClientInitializer != null) {
sqlClientInitializer.setAction(initializationAction);
} else {
initializationAction.run();
}
return sqlClient;
}
private void createTriggers() {
if (triggers == null) {
switch (triggerType) {
case TRANSACTION_ONLY:
transactionTriggers = triggers = new TriggersImpl(true);
break;
case BOTH:
triggers = new TriggersImpl(false);
transactionTriggers = new TriggersImpl(true);
break;
default:
triggers = new TriggersImpl(false);
break;
}
}
}
private FilterManager createFilterManager() {
return new FilterManager(
aopProxyProvider,
new LogicalDeletedFilterProvider(
logicalDeletedBehavior,
Collections.emptyMap(),
Collections.emptyMap(),
microServiceName
),
filters,
disabledFilters
);
}
private void validateAssociations(FilterManager filterManager) {
for (ImmutableType type : entityManager().getAllTypes(microServiceName)) {
if (type.isEntity()) {
for (ImmutableProp prop : type.getProps().values()) {
if (!prop.isNullable()) {
Set> filters = filterManager.getFiltersAffectNullity(prop);
if (!filters.isEmpty()) {
throw new ModelException(
"Illegal reference association property \"" +
prop +
"\", it must be nullable because the target type \"" +
prop.getTargetType() +
"\" may be handled by filters: " +
filters +
". If you only want let user cannot save null reference, " +
"please specify the `inputNotNull` of " +
(
prop.getAssociationAnnotation().annotationType() == OneToOne.class ?
OneToOne.class :
ManyToOne.class
).getName() +
"; If you want to make a promise at the business level that " +
"the association is not null to declare non-null reference, " +
"you must ensure the above three points: " +
"1. Let the filter implement a special empty interface: " +
"AssociationIntegrityAssuranceFilter(java) or" +
"KAssociationIntegrityAssuranceFilter(kotlin)" +
"2. All filters on the associated object are association " +
"integrity assurance filters" +
"3. The current object applies all filters which have been" +
"applied for associated object"
);
}
}
}
}
}
}
private void validateDatabase(MetadataStrategy metadataStrategy) {
if (databaseValidationMode != DatabaseValidationMode.NONE) {
ConnectionManager cm = connectionManager;
if (cm == null) {
throw new IllegalStateException(
"The `connectionManager` of must be configured when `validate` is configured"
);
}
DatabaseValidationException validationException = cm.execute(con -> {
try {
return DatabaseValidators.validate(
entityManager(),
microServiceName,
defaultDissociationActionCheckable,
metadataStrategy,
databaseValidationCatalog,
databaseValidationSchema,
con
);
} catch (SQLException ex) {
throw new ExecutionException(
"Cannot validate the database because of SQL exception",
ex
);
}
});
if (validationException != null) {
if (databaseValidationMode == DatabaseValidationMode.ERROR) {
throw validationException;
}
LOGGER.warn(validationException.getMessage(), validationException);
}
}
}
private EntityManager entityManager() {
EntityManager em = this.userEntityManager;
if (em == null) {
em = this.defaultEntityManager;
if (em == null) {
em = EntityManager.fromResources(null, null);
this.defaultEntityManager = em;
}
}
return em;
}
}
private static class SqlClientInitializer {
private final ReadWriteLock rwl = new ReentrantReadWriteLock();
private Runnable action;
public void setAction(Runnable action) {
if (this.action != null) {
throw new IllegalStateException("action has already been set");
}
if (action == null) {
throw new IllegalArgumentException("action cannot be null");
}
this.action = action;
}
private void initialize() {
Lock lock;
(lock = rwl.readLock()).lock();
try {
if (action == null) {
return;
}
} finally {
lock.unlock();
}
(lock = rwl.writeLock()).lock();
try {
if (action == null) {
return;
}
action.run();
action = null;
} finally {
lock.unlock();
}
}
}
}