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io.ebeaninternal.server.deploy.BeanPropertyAssocOne Maven / Gradle / Ivy
composite of common runtime dependencies for all platforms
package io.ebeaninternal.server.deploy;
import io.ebean.Query;
import io.ebean.SqlUpdate;
import io.ebean.Transaction;
import io.ebean.ValuePair;
import io.ebean.bean.EntityBean;
import io.ebean.bean.PersistenceContext;
import io.ebean.util.SplitName;
import io.ebeaninternal.api.SpiEbeanServer;
import io.ebeaninternal.api.SpiQuery;
import io.ebeaninternal.api.json.SpiJsonReader;
import io.ebeaninternal.api.json.SpiJsonWriter;
import io.ebeaninternal.server.cache.CacheChangeSet;
import io.ebeaninternal.server.cache.CachedBeanData;
import io.ebeaninternal.server.core.DefaultSqlUpdate;
import io.ebeaninternal.server.deploy.id.ImportedId;
import io.ebeaninternal.server.deploy.meta.DeployBeanPropertyAssocOne;
import io.ebeaninternal.server.el.ElPropertyChainBuilder;
import io.ebeaninternal.server.el.ElPropertyValue;
import io.ebeaninternal.server.query.STreePropertyAssocOne;
import io.ebeaninternal.server.query.SqlBeanLoad;
import io.ebeaninternal.server.query.SqlJoinType;
import io.ebeaninternal.server.type.ScalarType;
import javax.persistence.PersistenceException;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Property mapped to a joined bean.
*/
public class BeanPropertyAssocOne extends BeanPropertyAssoc implements STreePropertyAssocOne {
private final boolean oneToOne;
private final boolean oneToOneExported;
private final boolean orphanRemoval;
private final boolean primaryKeyExport;
private AssocOneHelp localHelp;
protected final BeanProperty[] embeddedProps;
private final HashMap embeddedPropsMap;
protected ImportedId importedId;
private String deleteByParentIdSql;
private String deleteByParentIdInSql;
private BeanPropertyAssocMany relationshipProperty;
private boolean cacheNotifyRelationship;
/**
* Create based on deploy information of an EmbeddedId.
*/
public BeanPropertyAssocOne(BeanDescriptorMap owner, DeployBeanPropertyAssocOne deploy) {
this(owner, null, deploy);
}
/**
* Create the property.
*/
public BeanPropertyAssocOne(BeanDescriptorMap owner, BeanDescriptor descriptor,
DeployBeanPropertyAssocOne deploy) {
super(descriptor, deploy);
primaryKeyExport = deploy.isPrimaryKeyExport();
oneToOne = deploy.isOneToOne();
oneToOneExported = deploy.isOneToOneExported();
orphanRemoval = deploy.isOrphanRemoval();
if (embedded) {
// Overriding of the columns and use table alias of owning BeanDescriptor
BeanEmbeddedMeta overrideMeta = BeanEmbeddedMetaFactory.create(owner, deploy);
embeddedProps = overrideMeta.getProperties();
embeddedPropsMap = new HashMap<>();
for (BeanProperty embeddedProp : embeddedProps) {
embeddedPropsMap.put(embeddedProp.getName(), embeddedProp);
}
} else {
embeddedProps = null;
embeddedPropsMap = null;
}
}
@Override
public void initialise(BeanDescriptorInitContext initContext) {
super.initialise(initContext);
initialiseAssocOne();
}
private void initialiseAssocOne() {
localHelp = createHelp(embedded, oneToOneExported);
if (!isTransient) {
//noinspection StatementWithEmptyBody
if (embedded || descriptor.isDocStoreOnly()) {
// no imported or exported information
} else if (!oneToOneExported) {
importedId = createImportedId(this, targetDescriptor, tableJoin);
if (importedId.isScalar()) {
// limit JoinColumn mapping to the @Id / primary key
TableJoinColumn[] columns = tableJoin.columns();
String foreignJoinColumn = columns[0].getForeignDbColumn();
String foreignIdColumn = targetDescriptor.getIdProperty().getDbColumn();
if (!foreignJoinColumn.equalsIgnoreCase(foreignIdColumn)) {
throw new PersistenceException("Mapping limitation - @JoinColumn on " + getFullBeanName() + " needs to map to a primary key as per Issue #529 "
+ " - joining to " + foreignJoinColumn + " and not " + foreignIdColumn);
}
}
} else {
exportedProperties = createExported();
String delStmt = "delete from " + targetDescriptor.getBaseTable() + " where ";
deleteByParentIdSql = delStmt + deriveWhereParentIdSql(false);
deleteByParentIdInSql = delStmt + deriveWhereParentIdSql(true);
}
}
}
/**
* Derive late in lifecycle cache notification on this relationship.
*/
public void initialisePostTarget() {
this.cacheNotifyRelationship = isCacheNotifyRelationship();
}
/**
* Return the property value as an entity bean.
*/
public EntityBean getValueAsEntityBean(EntityBean owner) {
return (EntityBean) getValue(owner);
}
void setRelationshipProperty(BeanPropertyAssocMany relationshipProperty) {
this.relationshipProperty = relationshipProperty;
}
/**
* Return true if this relationship needs to maintain/update L2 cache.
*/
boolean isCacheNotifyRelationship() {
return relationshipProperty != null && targetDescriptor.isBeanCaching();
}
/**
* Clear the L2 relationship cache for this property.
*/
void cacheClear() {
if (cacheNotifyRelationship) {
targetDescriptor.cacheManyPropClear(relationshipProperty.getName());
}
}
void cacheClear(CacheChangeSet changeSet) {
if (cacheNotifyRelationship) {
changeSet.addManyClear(targetDescriptor, relationshipProperty.getName());
}
}
/**
* Clear part of the L2 relationship cache for this property.
*/
void cacheDelete(boolean clear, EntityBean bean, CacheChangeSet changeSet) {
if (cacheNotifyRelationship) {
if (clear) {
changeSet.addManyClear(targetDescriptor, relationshipProperty.getName());
} else {
Object assocBean = getValue(bean);
if (assocBean != null) {
Object parentId = targetDescriptor.getId((EntityBean) assocBean);
if (parentId != null) {
changeSet.addManyRemove(targetDescriptor, relationshipProperty.getName(), parentId);
}
}
}
}
}
@Override
public ElPropertyValue buildElPropertyValue(String propName, String remainder, ElPropertyChainBuilder chain, boolean propertyDeploy) {
if (embedded) {
BeanProperty embProp = embeddedPropsMap.get(remainder);
if (embProp == null) {
String msg = "Embedded Property " + remainder + " not found in " + getFullBeanName();
throw new PersistenceException(msg);
}
if (chain == null) {
chain = new ElPropertyChainBuilder(true, propName);
}
chain.add(this);
chain.setEmbedded(true);
return chain.add(embProp).build();
}
return createElPropertyValue(propName, remainder, chain, propertyDeploy);
}
@Override
public String getElPlaceholder(boolean encrypted) {
return encrypted ? elPlaceHolderEncrypted : elPlaceHolder;
}
public SqlUpdate deleteByParentId(Object parentId, List parentIdist) {
if (parentId != null) {
return deleteByParentId(parentId);
} else {
return deleteByParentIdList(parentIdist);
}
}
private SqlUpdate deleteByParentIdList(List parentIds) {
StringBuilder sb = new StringBuilder(100);
sb.append(deleteByParentIdInSql);
sb.append(targetIdBinder.getIdInValueExpr(false, parentIds.size()));
DefaultSqlUpdate delete = new DefaultSqlUpdate(sb.toString());
bindParentIds(delete, parentIds);
return delete;
}
private SqlUpdate deleteByParentId(Object parentId) {
DefaultSqlUpdate delete = new DefaultSqlUpdate(deleteByParentIdSql);
bindParentId(delete, parentId);
return delete;
}
public List findIdsByParentId(Object parentId, List parentIds, Transaction t) {
if (parentId != null) {
return findIdsByParentId(parentId, t);
} else {
return findIdsByParentIdList(parentIds, t);
}
}
private List findIdsByParentId(Object parentId, Transaction t) {
String rawWhere = deriveWhereParentIdSql(false);
SpiEbeanServer server = server();
Query q = server.find(getPropertyType());
bindParentIdEq(rawWhere, parentId, q);
return server.findIds(q, t);
}
private List findIdsByParentIdList(List parentIds, Transaction t) {
String rawWhere = deriveWhereParentIdSql(true);
String inClause = getIdBinder().getIdInValueExpr(false, parentIds.size());
String expr = rawWhere + inClause;
SpiEbeanServer server = server();
Query q = server.find(getPropertyType());
bindParentIdsIn(expr, parentIds, q);
return server.findIds(q, t);
}
void addFkey() {
if (importedId != null) {
importedId.addFkeys(name);
}
}
@Override
public void registerColumn(BeanDescriptor desc, String prefix) {
if (embedded) {
for (BeanProperty prop : embeddedProps) {
prop.registerColumn(desc, SplitName.add(prefix, name));
}
} else {
if (targetIdProperty != null) {
BeanDescriptor target = getTargetDescriptor();
String basePath = SplitName.add(prefix, name);
if (dbColumn != null) {
BeanProperty idProperty = target.getIdProperty();
desc.registerColumn(dbColumn, SplitName.add(basePath, idProperty.getName()));
}
desc.registerTable(target.getBaseTable(), this);
}
}
}
/**
* Return meta data for the deployment of the embedded bean specific to this
* property.
*/
public BeanProperty[] getProperties() {
return embeddedProps;
}
@Override
public void buildRawSqlSelectChain(String prefix, List selectChain) {
prefix = SplitName.add(prefix, name);
if (!embedded) {
InheritInfo inheritInfo = targetDescriptor.getInheritInfo();
if (inheritInfo != null) {
// expect the discriminator column to be included in order
// to determine the inheritance type so we add it to the
// selectChain (so that it takes a position in the resultSet)
String discriminatorColumn = inheritInfo.getDiscriminatorColumn();
String discProperty = prefix + "." + discriminatorColumn;
selectChain.add(discProperty);
}
if (targetIdBinder == null) {
throw new IllegalStateException("No Id binding property for " + getFullBeanName()
+ ". Probably a missing @OneToOne mapping annotation on this relationship?");
}
targetIdBinder.buildRawSqlSelectChain(prefix, selectChain);
} else {
for (BeanProperty embeddedProp : embeddedProps) {
embeddedProp.buildRawSqlSelectChain(prefix, selectChain);
}
}
}
public boolean hasForeignKey() {
return foreignKey == null || !foreignKey.isNoConstraint();
}
public boolean hasForeignKeyIndex() {
return foreignKey == null || !foreignKey.isNoIndex();
}
/**
* Return true if this a OneToOne property. Otherwise assumed ManyToOne.
*/
public boolean isOneToOne() {
return oneToOne;
}
/**
* Return true if this is the exported side of a OneToOne.
*/
public boolean isOneToOneExported() {
return oneToOneExported;
}
public boolean isOrphanRemoval() {
return orphanRemoval;
}
@Override
public void diff(String prefix, Map map, EntityBean newBean, EntityBean oldBean) {
Object newEmb = (newBean == null) ? null : getValue(newBean);
Object oldEmb = (oldBean == null) ? null : getValue(oldBean);
if (newEmb == null && oldEmb == null) {
return;
}
if (embedded) {
prefix = (prefix == null) ? name : prefix + "." + name;
BeanDescriptor targetDescriptor = getTargetDescriptor();
targetDescriptor.diff(prefix, map, (EntityBean) newEmb, (EntityBean) oldEmb);
} else {
// we are only interested in the Id value
newBean = (EntityBean) newEmb;
oldBean = (EntityBean) oldEmb;
BeanDescriptor targetDescriptor = getTargetDescriptor();
BeanProperty idProperty = targetDescriptor.getIdProperty();
Object newId = (newBean == null) ? null : idProperty.getValue(newBean);
Object oldId = (oldBean == null) ? null : idProperty.getValue(oldBean);
if (newId != null || oldId != null) {
prefix = (prefix == null) ? name : prefix + "." + name;
idProperty.diffVal(prefix, map, newId, oldId);
}
}
}
/**
* Same as getPropertyType(). Return the type of the bean this property
* represents.
*/
@Override
public Class getTargetType() {
return getPropertyType();
}
@Override
public Object getCacheDataValue(EntityBean bean) {
Object ap = getValue(bean);
if (ap == null) {
return null;
}
if (embedded) {
return targetDescriptor.cacheEmbeddedBeanExtract((EntityBean) ap);
} else {
return targetDescriptor.getIdProperty().getCacheDataValue((EntityBean) ap);
}
}
@Override
public void setCacheDataValue(EntityBean bean, Object cacheData, PersistenceContext context) {
if (cacheData == null) {
setValue(bean, null);
} else {
if (embedded) {
setValue(bean, targetDescriptor.cacheEmbeddedBeanLoad((CachedBeanData) cacheData, context));
} else {
if (cacheData instanceof String) {
cacheData = targetDescriptor.getIdProperty().scalarType.parse((String) cacheData);
}
// cacheData is the id value, maybe already in persistence context
Object assocBean = targetDescriptor.contextGet(context, cacheData);
if (assocBean == null) {
assocBean = targetDescriptor.createReference(cacheData, context);
}
setValue(bean, assocBean);
}
}
}
@Override
public ScalarType getIdScalarType() {
return targetDescriptor.getIdProperty().getScalarType();
}
/**
* Return the Id values from the given bean.
*/
@Override
public Object[] getAssocIdValues(EntityBean bean) {
return targetDescriptor.getIdBinder().getIdValues(bean);
}
/**
* Return the Id expression to add to where clause etc.
*/
@Override
public String getAssocIdExpression(String prefix, String operator) {
return targetDescriptor.getIdBinder().getAssocOneIdExpr(prefix, operator);
}
/**
* Return the logical id value expression taking into account embedded id's.
*/
@Override
public String getAssocIdInValueExpr(boolean not, int size) {
return targetDescriptor.getIdBinder().getIdInValueExpr(not, size);
}
/**
* Return the logical id in expression taking into account embedded id's.
*/
@Override
public String getAssocIdInExpr(String prefix) {
return targetDescriptor.getIdBinder().getAssocIdInExpr(prefix);
}
@Override
public boolean isAssocId() {
return !embedded;
}
@Override
public boolean isAssocProperty() {
return !embedded;
}
/**
* Create a bean of the target type to be used as an embeddedId
* value.
*/
public Object createEmbeddedId() {
return getTargetDescriptor().createEntityBean();
}
@Override
public Object pathGetNested(Object bean) {
Object value = getValueIntercept((EntityBean) bean);
if (value == null) {
value = targetDescriptor.createEntityBean();
setValueIntercept((EntityBean) bean, value);
}
return value;
}
public ImportedId getImportedId() {
return importedId;
}
private String deriveWhereParentIdSql(boolean inClause) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < exportedProperties.length; i++) {
String fkColumn = exportedProperties[i].getForeignDbColumn();
if (i > 0) {
String s = inClause ? "," : " and ";
sb.append(s);
}
sb.append(fkColumn);
if (!inClause) {
sb.append("=? ");
}
}
return sb.toString();
}
/**
* Create the array of ExportedProperty used to build reference objects.
*/
private ExportedProperty[] createExported() {
BeanProperty idProp = descriptor.getIdProperty();
ArrayList list = new ArrayList<>();
if (idProp != null && idProp.isEmbedded()) {
BeanPropertyAssocOne one = (BeanPropertyAssocOne) idProp;
BeanDescriptor targetDesc = one.getTargetDescriptor();
BeanProperty[] emIds = targetDesc.propertiesBaseScalar();
try {
for (BeanProperty emId : emIds) {
list.add(findMatch(true, emId));
}
} catch (PersistenceException e) {
// not found as individual scalar properties
e.printStackTrace();
}
} else {
if (idProp != null) {
list.add(findMatch(false, idProp));
}
}
return list.toArray(new ExportedProperty[list.size()]);
}
/**
* Find the matching foreignDbColumn for a given local property.
*/
private ExportedProperty findMatch(boolean embeddedProp, BeanProperty prop) {
return findMatch(embeddedProp, prop, prop.getDbColumn(), tableJoin);
}
@Override
public void appendSelect(DbSqlContext ctx, boolean subQuery) {
if (!isTransient) {
if (primaryKeyExport) {
descriptor.getIdProperty().appendSelect(ctx, subQuery);
} else {
localHelp.appendSelect(ctx, subQuery);
}
}
}
@Override
public void appendFrom(DbSqlContext ctx, SqlJoinType joinType) {
if (!isTransient && !primaryKeyExport) {
localHelp.appendFrom(ctx, joinType);
if (sqlFormulaJoin != null) {
ctx.appendFormulaJoin(sqlFormulaJoin, joinType);
}
}
}
@Override
public Object readSet(DbReadContext ctx, EntityBean bean) throws SQLException {
return localHelp.readSet(ctx, bean);
}
/**
* Read the data from the resultSet effectively ignoring it and returning null.
*/
@Override
public Object read(DbReadContext ctx) throws SQLException {
// just read the resultSet incrementing the column index
// pass in null for the bean so any data read is ignored
return localHelp.read(ctx);
}
@Override
public void addTenant(SpiQuery query, Object tenantId) {
T refBean = targetDescriptor.createReference(tenantId, null);
query.where().eq(name, refBean);
}
@Override
public void setTenantValue(EntityBean entityBean, Object tenantId) {
T refBean = targetDescriptor.createReference(tenantId, null);
setValue(entityBean, refBean);
}
@Override
public void setValue(EntityBean bean, Object value) {
super.setValue(bean, value);
if (embedded && value instanceof EntityBean) {
setEmbeddedOwner(bean, value);
}
}
@Override
public void setValueIntercept(EntityBean bean, Object value) {
super.setValueIntercept(bean, value);
if (embedded && value instanceof EntityBean) {
setEmbeddedOwner(bean, value);
}
}
/**
* For embedded bean set the owner and all properties to be loaded (recursively).
*/
void setAllLoadedEmbedded(EntityBean owner) {
Object emb = getValue(owner);
if (emb != null) {
EntityBean embeddedBean = (EntityBean) emb;
embeddedBean._ebean_getIntercept().setEmbeddedOwner(owner, propertyIndex);
targetDescriptor.setAllLoaded(embeddedBean);
}
}
void setEmbeddedOwner(EntityBean bean, Object value) {
((EntityBean) value)._ebean_getIntercept().setEmbeddedOwner(bean, propertyIndex);
}
@Override
public void loadIgnore(DbReadContext ctx) {
localHelp.loadIgnore(ctx);
}
@Override
public void load(SqlBeanLoad sqlBeanLoad) {
Object dbVal = sqlBeanLoad.load(this);
if (embedded && sqlBeanLoad.isLazyLoad()) {
if (dbVal instanceof EntityBean) {
((EntityBean) dbVal)._ebean_getIntercept().setLoaded();
}
}
}
private AssocOneHelp createHelp(boolean embedded, boolean oneToOneExported) {
if (embedded) {
return new AssocOneHelpEmbedded(this);
} else if (oneToOneExported) {
return new AssocOneHelpRefExported(this);
} else {
if (targetInheritInfo != null) {
return new AssocOneHelpRefInherit(this);
} else {
return new AssocOneHelpRefSimple(this);
}
}
}
/**
* JSON write property (non-recursive to other beans).
*/
@Override
public void jsonWriteForInsert(SpiJsonWriter writeJson, EntityBean bean) throws IOException {
if (!jsonSerialize) {
return;
}
jsonWriteBean(writeJson, getValue(bean));
}
/**
* JSON write property value (non-recursive to other beans).
*/
@Override
public void jsonWriteValue(SpiJsonWriter writeJson, Object value) throws IOException {
if (!jsonSerialize) {
return;
}
jsonWriteBean(writeJson, value);
}
private void jsonWriteBean(SpiJsonWriter writeJson, Object value) throws IOException {
if (value instanceof EntityBean) {
if (embedded) {
writeJson.writeFieldName(name);
BeanDescriptor refDesc = descriptor.getBeanDescriptor(value.getClass());
refDesc.jsonWriteForInsert(writeJson, (EntityBean) value);
} else {
jsonWriteTargetId(writeJson, (EntityBean) value);
}
}
}
/**
* Just write the Id property of the ToOne property.
*/
private void jsonWriteTargetId(SpiJsonWriter writeJson, EntityBean childBean) throws IOException {
BeanProperty idProperty = targetDescriptor.getIdProperty();
if (idProperty != null) {
writeJson.writeStartObject(name);
idProperty.jsonWriteForInsert(writeJson, childBean);
writeJson.writeEndObject();
}
}
@Override
public void jsonWrite(SpiJsonWriter writeJson, EntityBean bean) throws IOException {
if (!jsonSerialize) {
return;
}
Object value = getValueIntercept(bean);
if (value == null) {
writeJson.writeNullField(name);
} else {
if (writeJson.isParentBean(value)) {
// bi-directional and already rendered parent
} else {
// Hmmm, not writing complex non-entity bean
if (value instanceof EntityBean) {
writeJson.beginAssocOne(name, bean);
BeanDescriptor refDesc = descriptor.getBeanDescriptor(value.getClass());
refDesc.jsonWrite(writeJson, (EntityBean) value, name);
writeJson.endAssocOne();
}
}
}
}
@Override
public void jsonRead(SpiJsonReader readJson, EntityBean bean) throws IOException {
if (jsonDeserialize && targetDescriptor != null) {
T assocBean = targetDescriptor.jsonRead(readJson, name);
setValue(bean, assocBean);
}
}
public boolean isReference(Object detailBean) {
EntityBean eb = (EntityBean) detailBean;
return targetDescriptor.isReference(eb._ebean_getIntercept());
}
/**
* Set the parent bean to the child bean if it has not already been set.
*/
public void setParentBeanToChild(EntityBean parent, EntityBean child) {
if (primaryKeyExport) {
Object parentId = descriptor.getId(parent);
targetDescriptor.convertSetId(parentId, child);
}
if (mappedBy != null) {
BeanProperty beanProperty = targetDescriptor.getBeanProperty(mappedBy);
if (beanProperty != null && beanProperty.getValue(child) == null) {
// set the 'parent' bean to the 'child' bean
beanProperty.setValue(child, parent);
}
}
}
}
