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Hibernate's core ORM functionality
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.persister.entity;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.hibernate.HibernateException;
import org.hibernate.MappingException;
import org.hibernate.boot.model.relational.Database;
import org.hibernate.cache.spi.access.EntityDataAccess;
import org.hibernate.cache.spi.access.NaturalIdDataAccess;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
import org.hibernate.engine.spi.ExecuteUpdateResultCheckStyle;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.internal.DynamicFilterAliasGenerator;
import org.hibernate.internal.FilterAliasGenerator;
import org.hibernate.internal.util.MarkerObject;
import org.hibernate.internal.util.collections.ArrayHelper;
import org.hibernate.mapping.Column;
import org.hibernate.mapping.Formula;
import org.hibernate.mapping.Join;
import org.hibernate.mapping.PersistentClass;
import org.hibernate.mapping.Property;
import org.hibernate.mapping.Selectable;
import org.hibernate.mapping.Subclass;
import org.hibernate.mapping.Table;
import org.hibernate.mapping.Value;
import org.hibernate.persister.spi.PersisterCreationContext;
import org.hibernate.sql.InFragment;
import org.hibernate.sql.Insert;
import org.hibernate.sql.SelectFragment;
import org.hibernate.type.AssociationType;
import org.hibernate.type.DiscriminatorType;
import org.hibernate.type.Type;
/**
* The default implementation of the EntityPersister interface.
* Implements the "table-per-class-hierarchy" or "roll-up" mapping strategy
* for an entity class and its inheritence hierarchy. This is implemented
* as a single table holding all classes in the hierarchy with a discrimator
* column used to determine which concrete class is referenced.
*
* @author Gavin King
*/
public class SingleTableEntityPersister extends AbstractEntityPersister {
// the class hierarchy structure
private final int joinSpan;
private final String[] qualifiedTableNames;
private final boolean[] isInverseTable;
private final boolean[] isNullableTable;
private final String[][] keyColumnNames;
private final boolean[] cascadeDeleteEnabled;
private final boolean hasSequentialSelects;
private final String[] spaces;
private final String[] subclassClosure;
private final String[] subclassTableNameClosure;
private final boolean[] subclassTableIsLazyClosure;
private final boolean[] isInverseSubclassTable;
private final boolean[] isNullableSubclassTable;
private final boolean[] subclassTableSequentialSelect;
private final String[][] subclassTableKeyColumnClosure;
private final boolean[] isClassOrSuperclassTable;
// properties of this class, including inherited properties
private final int[] propertyTableNumbers;
// the closure of all columns used by the entire hierarchy including
// subclasses and superclasses of this class
private final int[] subclassPropertyTableNumberClosure;
private final int[] subclassColumnTableNumberClosure;
private final int[] subclassFormulaTableNumberClosure;
// discriminator column
private final Map subclassesByDiscriminatorValue = new HashMap();
private final boolean forceDiscriminator;
private final String discriminatorColumnName;
private final String discriminatorColumnReaders;
private final String discriminatorColumnReaderTemplate;
private final String discriminatorFormula;
private final String discriminatorFormulaTemplate;
private final String discriminatorAlias;
private final Type discriminatorType;
private final Object discriminatorValue;
private final String discriminatorSQLValue;
private final boolean discriminatorInsertable;
private final String[] constraintOrderedTableNames;
private final String[][] constraintOrderedKeyColumnNames;
//private final Map propertyTableNumbersByName = new HashMap();
private final Map propertyTableNumbersByNameAndSubclass = new HashMap();
private final Map sequentialSelectStringsByEntityName = new HashMap();
private static final Object NULL_DISCRIMINATOR = new MarkerObject( "" );
private static final Object NOT_NULL_DISCRIMINATOR = new MarkerObject( "" );
private static final String NULL_STRING = "null";
private static final String NOT_NULL_STRING = "not null";
//INITIALIZATION:
public SingleTableEntityPersister(
final PersistentClass persistentClass,
final EntityDataAccess cacheAccessStrategy,
final NaturalIdDataAccess naturalIdRegionAccessStrategy,
final PersisterCreationContext creationContext) throws HibernateException {
super( persistentClass, cacheAccessStrategy, naturalIdRegionAccessStrategy, creationContext );
final SessionFactoryImplementor factory = creationContext.getSessionFactory();
final Database database = creationContext.getMetadata().getDatabase();
final JdbcEnvironment jdbcEnvironment = database.getJdbcEnvironment();
// CLASS + TABLE
joinSpan = persistentClass.getJoinClosureSpan() + 1;
qualifiedTableNames = new String[joinSpan];
isInverseTable = new boolean[joinSpan];
isNullableTable = new boolean[joinSpan];
keyColumnNames = new String[joinSpan][];
final Table table = persistentClass.getRootTable();
qualifiedTableNames[0] = determineTableName( table, jdbcEnvironment );
isInverseTable[0] = false;
isNullableTable[0] = false;
keyColumnNames[0] = getIdentifierColumnNames();
cascadeDeleteEnabled = new boolean[joinSpan];
// Custom sql
customSQLInsert = new String[joinSpan];
customSQLUpdate = new String[joinSpan];
customSQLDelete = new String[joinSpan];
insertCallable = new boolean[joinSpan];
updateCallable = new boolean[joinSpan];
deleteCallable = new boolean[joinSpan];
insertResultCheckStyles = new ExecuteUpdateResultCheckStyle[joinSpan];
updateResultCheckStyles = new ExecuteUpdateResultCheckStyle[joinSpan];
deleteResultCheckStyles = new ExecuteUpdateResultCheckStyle[joinSpan];
customSQLInsert[0] = persistentClass.getCustomSQLInsert();
insertCallable[0] = customSQLInsert[0] != null && persistentClass.isCustomInsertCallable();
insertResultCheckStyles[0] = persistentClass.getCustomSQLInsertCheckStyle() == null
? ExecuteUpdateResultCheckStyle.determineDefault( customSQLInsert[0], insertCallable[0] )
: persistentClass.getCustomSQLInsertCheckStyle();
customSQLUpdate[0] = persistentClass.getCustomSQLUpdate();
updateCallable[0] = customSQLUpdate[0] != null && persistentClass.isCustomUpdateCallable();
updateResultCheckStyles[0] = persistentClass.getCustomSQLUpdateCheckStyle() == null
? ExecuteUpdateResultCheckStyle.determineDefault( customSQLUpdate[0], updateCallable[0] )
: persistentClass.getCustomSQLUpdateCheckStyle();
customSQLDelete[0] = persistentClass.getCustomSQLDelete();
deleteCallable[0] = customSQLDelete[0] != null && persistentClass.isCustomDeleteCallable();
deleteResultCheckStyles[0] = persistentClass.getCustomSQLDeleteCheckStyle() == null
? ExecuteUpdateResultCheckStyle.determineDefault( customSQLDelete[0], deleteCallable[0] )
: persistentClass.getCustomSQLDeleteCheckStyle();
// JOINS
Iterator joinIter = persistentClass.getJoinClosureIterator();
int j = 1;
while ( joinIter.hasNext() ) {
Join join = (Join) joinIter.next();
qualifiedTableNames[j] = determineTableName( join.getTable(), jdbcEnvironment );
isInverseTable[j] = join.isInverse();
isNullableTable[j] = join.isOptional();
cascadeDeleteEnabled[j] = join.getKey().isCascadeDeleteEnabled() &&
factory.getDialect().supportsCascadeDelete();
customSQLInsert[j] = join.getCustomSQLInsert();
insertCallable[j] = customSQLInsert[j] != null && join.isCustomInsertCallable();
insertResultCheckStyles[j] = join.getCustomSQLInsertCheckStyle() == null
? ExecuteUpdateResultCheckStyle.determineDefault( customSQLInsert[j], insertCallable[j] )
: join.getCustomSQLInsertCheckStyle();
customSQLUpdate[j] = join.getCustomSQLUpdate();
updateCallable[j] = customSQLUpdate[j] != null && join.isCustomUpdateCallable();
updateResultCheckStyles[j] = join.getCustomSQLUpdateCheckStyle() == null
? ExecuteUpdateResultCheckStyle.determineDefault( customSQLUpdate[j], updateCallable[j] )
: join.getCustomSQLUpdateCheckStyle();
customSQLDelete[j] = join.getCustomSQLDelete();
deleteCallable[j] = customSQLDelete[j] != null && join.isCustomDeleteCallable();
deleteResultCheckStyles[j] = join.getCustomSQLDeleteCheckStyle() == null
? ExecuteUpdateResultCheckStyle.determineDefault( customSQLDelete[j], deleteCallable[j] )
: join.getCustomSQLDeleteCheckStyle();
Iterator iter = join.getKey().getColumnIterator();
keyColumnNames[j] = new String[join.getKey().getColumnSpan()];
int i = 0;
while ( iter.hasNext() ) {
Column col = (Column) iter.next();
keyColumnNames[j][i++] = col.getQuotedName( factory.getDialect() );
}
j++;
}
constraintOrderedTableNames = new String[qualifiedTableNames.length];
constraintOrderedKeyColumnNames = new String[qualifiedTableNames.length][];
for ( int i = qualifiedTableNames.length - 1, position = 0; i >= 0; i--, position++ ) {
constraintOrderedTableNames[position] = qualifiedTableNames[i];
constraintOrderedKeyColumnNames[position] = keyColumnNames[i];
}
spaces = ArrayHelper.join(
qualifiedTableNames,
ArrayHelper.toStringArray( persistentClass.getSynchronizedTables() )
);
final boolean lazyAvailable = isInstrumented();
boolean hasDeferred = false;
ArrayList subclassTables = new ArrayList();
ArrayList joinKeyColumns = new ArrayList();
ArrayList isConcretes = new ArrayList();
ArrayList isDeferreds = new ArrayList();
ArrayList isInverses = new ArrayList();
ArrayList isNullables = new ArrayList();
ArrayList isLazies = new ArrayList();
subclassTables.add( qualifiedTableNames[0] );
joinKeyColumns.add( getIdentifierColumnNames() );
isConcretes.add( Boolean.TRUE );
isDeferreds.add( Boolean.FALSE );
isInverses.add( Boolean.FALSE );
isNullables.add( Boolean.FALSE );
isLazies.add( Boolean.FALSE );
joinIter = persistentClass.getSubclassJoinClosureIterator();
while ( joinIter.hasNext() ) {
Join join = (Join) joinIter.next();
isConcretes.add( persistentClass.isClassOrSuperclassJoin( join ) );
isDeferreds.add( join.isSequentialSelect() );
isInverses.add( join.isInverse() );
isNullables.add( join.isOptional() );
isLazies.add( lazyAvailable && join.isLazy() );
if ( join.isSequentialSelect() && !persistentClass.isClassOrSuperclassJoin( join ) ) {
hasDeferred = true;
}
subclassTables.add(
join.getTable().getQualifiedName(
factory.getDialect(),
factory.getSettings().getDefaultCatalogName(),
factory.getSettings().getDefaultSchemaName()
)
);
Iterator iter = join.getKey().getColumnIterator();
String[] keyCols = new String[join.getKey().getColumnSpan()];
int i = 0;
while ( iter.hasNext() ) {
Column col = (Column) iter.next();
keyCols[i++] = col.getQuotedName( factory.getDialect() );
}
joinKeyColumns.add( keyCols );
}
subclassTableSequentialSelect = ArrayHelper.toBooleanArray( isDeferreds );
subclassTableNameClosure = ArrayHelper.toStringArray( subclassTables );
subclassTableIsLazyClosure = ArrayHelper.toBooleanArray( isLazies );
subclassTableKeyColumnClosure = ArrayHelper.to2DStringArray( joinKeyColumns );
isClassOrSuperclassTable = ArrayHelper.toBooleanArray( isConcretes );
isInverseSubclassTable = ArrayHelper.toBooleanArray( isInverses );
isNullableSubclassTable = ArrayHelper.toBooleanArray( isNullables );
hasSequentialSelects = hasDeferred;
// DISCRIMINATOR
if ( persistentClass.isPolymorphic() ) {
Value discrimValue = persistentClass.getDiscriminator();
if ( discrimValue == null ) {
throw new MappingException( "discriminator mapping required for single table polymorphic persistence" );
}
forceDiscriminator = persistentClass.isForceDiscriminator();
Selectable selectable = (Selectable) discrimValue.getColumnIterator().next();
if ( discrimValue.hasFormula() ) {
Formula formula = (Formula) selectable;
discriminatorFormula = formula.getFormula();
discriminatorFormulaTemplate = formula.getTemplate(
factory.getDialect(),
factory.getSqlFunctionRegistry()
);
discriminatorColumnName = null;
discriminatorColumnReaders = null;
discriminatorColumnReaderTemplate = null;
discriminatorAlias = "clazz_";
}
else {
Column column = (Column) selectable;
discriminatorColumnName = column.getQuotedName( factory.getDialect() );
discriminatorColumnReaders = column.getReadExpr( factory.getDialect() );
discriminatorColumnReaderTemplate = column.getTemplate(
factory.getDialect(),
factory.getSqlFunctionRegistry()
);
discriminatorAlias = column.getAlias( factory.getDialect(), persistentClass.getRootTable() );
discriminatorFormula = null;
discriminatorFormulaTemplate = null;
}
discriminatorType = persistentClass.getDiscriminator().getType();
if ( persistentClass.isDiscriminatorValueNull() ) {
discriminatorValue = NULL_DISCRIMINATOR;
discriminatorSQLValue = InFragment.NULL;
discriminatorInsertable = false;
}
else if ( persistentClass.isDiscriminatorValueNotNull() ) {
discriminatorValue = NOT_NULL_DISCRIMINATOR;
discriminatorSQLValue = InFragment.NOT_NULL;
discriminatorInsertable = false;
}
else {
discriminatorInsertable = persistentClass.isDiscriminatorInsertable() && !discrimValue.hasFormula();
try {
DiscriminatorType dtype = (DiscriminatorType) discriminatorType;
discriminatorValue = dtype.stringToObject( persistentClass.getDiscriminatorValue() );
discriminatorSQLValue = dtype.objectToSQLString( discriminatorValue, factory.getDialect() );
}
catch (ClassCastException cce) {
throw new MappingException( "Illegal discriminator type: " + discriminatorType.getName() );
}
catch (Exception e) {
throw new MappingException( "Could not format discriminator value to SQL string", e );
}
}
}
else {
forceDiscriminator = false;
discriminatorInsertable = false;
discriminatorColumnName = null;
discriminatorColumnReaders = null;
discriminatorColumnReaderTemplate = null;
discriminatorAlias = null;
discriminatorType = null;
discriminatorValue = null;
discriminatorSQLValue = null;
discriminatorFormula = null;
discriminatorFormulaTemplate = null;
}
// PROPERTIES
propertyTableNumbers = new int[getPropertySpan()];
Iterator iter = persistentClass.getPropertyClosureIterator();
int i = 0;
while ( iter.hasNext() ) {
Property prop = (Property) iter.next();
propertyTableNumbers[i++] = persistentClass.getJoinNumber( prop );
}
//TODO: code duplication with JoinedSubclassEntityPersister
ArrayList columnJoinNumbers = new ArrayList();
ArrayList formulaJoinedNumbers = new ArrayList();
ArrayList propertyJoinNumbers = new ArrayList();
iter = persistentClass.getSubclassPropertyClosureIterator();
while ( iter.hasNext() ) {
Property prop = (Property) iter.next();
Integer join = persistentClass.getJoinNumber( prop );
propertyJoinNumbers.add( join );
//propertyTableNumbersByName.put( prop.getName(), join );
propertyTableNumbersByNameAndSubclass.put(
prop.getPersistentClass().getEntityName() + '.' + prop.getName(),
join
);
Iterator citer = prop.getColumnIterator();
while ( citer.hasNext() ) {
Selectable thing = (Selectable) citer.next();
if ( thing.isFormula() ) {
formulaJoinedNumbers.add( join );
}
else {
columnJoinNumbers.add( join );
}
}
}
subclassColumnTableNumberClosure = ArrayHelper.toIntArray( columnJoinNumbers );
subclassFormulaTableNumberClosure = ArrayHelper.toIntArray( formulaJoinedNumbers );
subclassPropertyTableNumberClosure = ArrayHelper.toIntArray( propertyJoinNumbers );
int subclassSpan = persistentClass.getSubclassSpan() + 1;
subclassClosure = new String[subclassSpan];
subclassClosure[0] = getEntityName();
if ( persistentClass.isPolymorphic() ) {
addSubclassByDiscriminatorValue( discriminatorValue, getEntityName() );
}
// SUBCLASSES
if ( persistentClass.isPolymorphic() ) {
iter = persistentClass.getSubclassIterator();
int k = 1;
while ( iter.hasNext() ) {
Subclass sc = (Subclass) iter.next();
subclassClosure[k++] = sc.getEntityName();
if ( sc.isDiscriminatorValueNull() ) {
addSubclassByDiscriminatorValue( NULL_DISCRIMINATOR, sc.getEntityName() );
}
else if ( sc.isDiscriminatorValueNotNull() ) {
addSubclassByDiscriminatorValue( NOT_NULL_DISCRIMINATOR, sc.getEntityName() );
}
else {
try {
DiscriminatorType dtype = (DiscriminatorType) discriminatorType;
addSubclassByDiscriminatorValue(
dtype.stringToObject( sc.getDiscriminatorValue() ),
sc.getEntityName()
);
}
catch (ClassCastException cce) {
throw new MappingException( "Illegal discriminator type: " + discriminatorType.getName() );
}
catch (Exception e) {
throw new MappingException( "Error parsing discriminator value", e );
}
}
}
}
initLockers();
initSubclassPropertyAliasesMap( persistentClass );
postConstruct( creationContext.getMetadata() );
}
private void addSubclassByDiscriminatorValue(Object discriminatorValue, String entityName) {
String mappedEntityName = subclassesByDiscriminatorValue.put( discriminatorValue, entityName );
if ( mappedEntityName != null ) {
throw new MappingException(
"Entities [" + entityName + "] and [" + mappedEntityName
+ "] are mapped with the same discriminator value '" + discriminatorValue + "'."
);
}
}
protected boolean isInverseTable(int j) {
return isInverseTable[j];
}
protected boolean isInverseSubclassTable(int j) {
return isInverseSubclassTable[j];
}
public String getDiscriminatorColumnName() {
return discriminatorColumnName;
}
public String getDiscriminatorColumnReaders() {
return discriminatorColumnReaders;
}
public String getDiscriminatorColumnReaderTemplate() {
return discriminatorColumnReaderTemplate;
}
protected String getDiscriminatorAlias() {
return discriminatorAlias;
}
protected String getDiscriminatorFormulaTemplate() {
return discriminatorFormulaTemplate;
}
public String getTableName() {
return qualifiedTableNames[0];
}
public Type getDiscriminatorType() {
return discriminatorType;
}
public Object getDiscriminatorValue() {
return discriminatorValue;
}
public String getDiscriminatorSQLValue() {
return discriminatorSQLValue;
}
public String[] getSubclassClosure() {
return subclassClosure;
}
public String getSubclassForDiscriminatorValue(Object value) {
if ( value == null ) {
return subclassesByDiscriminatorValue.get( NULL_DISCRIMINATOR );
}
else {
String result = subclassesByDiscriminatorValue.get( value );
if ( result == null ) {
result = subclassesByDiscriminatorValue.get( NOT_NULL_DISCRIMINATOR );
}
return result;
}
}
public Serializable[] getPropertySpaces() {
return spaces;
}
//Access cached SQL
protected boolean isDiscriminatorFormula() {
return discriminatorColumnName == null;
}
protected String getDiscriminatorFormula() {
return discriminatorFormula;
}
protected String getTableName(int j) {
return qualifiedTableNames[j];
}
protected String[] getKeyColumns(int j) {
return keyColumnNames[j];
}
protected boolean isTableCascadeDeleteEnabled(int j) {
return cascadeDeleteEnabled[j];
}
protected boolean isPropertyOfTable(int property, int j) {
return propertyTableNumbers[property] == j;
}
protected boolean isSubclassTableSequentialSelect(int j) {
return subclassTableSequentialSelect[j] && !isClassOrSuperclassTable[j];
}
// Execute the SQL:
public String fromTableFragment(String name) {
return getTableName() + ' ' + name;
}
@Override
public String filterFragment(String alias) throws MappingException {
String result = discriminatorFilterFragment( alias );
if ( hasWhere() ) {
result += " and " + getSQLWhereString( alias );
}
return result;
}
private String discriminatorFilterFragment(String alias) throws MappingException {
return discriminatorFilterFragment( alias, null );
}
public String oneToManyFilterFragment(String alias) throws MappingException {
return forceDiscriminator
? discriminatorFilterFragment( alias, null )
: "";
}
@Override
public String oneToManyFilterFragment(String alias, Set treatAsDeclarations) {
return needsDiscriminator()
? discriminatorFilterFragment( alias, treatAsDeclarations )
: "";
}
@Override
public String filterFragment(String alias, Set treatAsDeclarations) {
String result = discriminatorFilterFragment( alias, treatAsDeclarations );
if ( hasWhere() ) {
result += " and " + getSQLWhereString( alias );
}
return result;
}
private String discriminatorFilterFragment(String alias, Set treatAsDeclarations) {
final boolean hasTreatAs = treatAsDeclarations != null && !treatAsDeclarations.isEmpty();
if ( !needsDiscriminator() && !hasTreatAs ) {
return "";
}
final InFragment frag = new InFragment();
if ( isDiscriminatorFormula() ) {
frag.setFormula( alias, getDiscriminatorFormulaTemplate() );
}
else {
frag.setColumn( alias, getDiscriminatorColumnName() );
}
if ( hasTreatAs ) {
frag.addValues( decodeTreatAsRequests( treatAsDeclarations ) );
}
else {
frag.addValues( fullDiscriminatorValues() );
}
return " and " + frag.toFragmentString();
}
private boolean needsDiscriminator() {
return forceDiscriminator || isInherited();
}
private String[] decodeTreatAsRequests(Set treatAsDeclarations) {
final List values = new ArrayList();
for ( String subclass : treatAsDeclarations ) {
final Queryable queryable = (Queryable) getFactory().getEntityPersister( subclass );
if ( !queryable.isAbstract() ) {
values.add( queryable.getDiscriminatorSQLValue() );
}
else if ( queryable.hasSubclasses() ) {
// if the treat is an abstract class, add the concrete implementations to values if any
Set actualSubClasses = queryable.getEntityMetamodel().getSubclassEntityNames();
for ( String actualSubClass : actualSubClasses ) {
if ( actualSubClass.equals( subclass ) ) {
continue;
}
Queryable actualQueryable = (Queryable) getFactory().getEntityPersister( actualSubClass );
if ( !actualQueryable.hasSubclasses() ) {
values.add( actualQueryable.getDiscriminatorSQLValue() );
}
}
}
}
return values.toArray( new String[values.size()] );
}
private String[] fullDiscriminatorValues;
private String[] fullDiscriminatorValues() {
if ( fullDiscriminatorValues == null ) {
// first access; build it
final List values = new ArrayList();
for ( String subclass : getSubclassClosure() ) {
final Queryable queryable = (Queryable) getFactory().getEntityPersister( subclass );
if ( !queryable.isAbstract() ) {
values.add( queryable.getDiscriminatorSQLValue() );
}
}
fullDiscriminatorValues = values.toArray( new String[values.size()] );
}
return fullDiscriminatorValues;
}
public String getSubclassPropertyTableName(int i) {
return subclassTableNameClosure[subclassPropertyTableNumberClosure[i]];
}
protected void addDiscriminatorToSelect(SelectFragment select, String name, String suffix) {
if ( isDiscriminatorFormula() ) {
select.addFormula( name, getDiscriminatorFormulaTemplate(), getDiscriminatorAlias() );
}
else {
select.addColumn( name, getDiscriminatorColumnName(), getDiscriminatorAlias() );
}
}
protected int[] getPropertyTableNumbersInSelect() {
return propertyTableNumbers;
}
protected int getSubclassPropertyTableNumber(int i) {
return subclassPropertyTableNumberClosure[i];
}
public int getTableSpan() {
return joinSpan;
}
protected void addDiscriminatorToInsert(Insert insert) {
if ( discriminatorInsertable ) {
insert.addColumn( getDiscriminatorColumnName(), discriminatorSQLValue );
}
}
protected int[] getSubclassColumnTableNumberClosure() {
return subclassColumnTableNumberClosure;
}
protected int[] getSubclassFormulaTableNumberClosure() {
return subclassFormulaTableNumberClosure;
}
protected int[] getPropertyTableNumbers() {
return propertyTableNumbers;
}
protected boolean isSubclassPropertyDeferred(String propertyName, String entityName) {
return hasSequentialSelects &&
isSubclassTableSequentialSelect( getSubclassPropertyTableNumber( propertyName, entityName ) );
}
public boolean hasSequentialSelect() {
return hasSequentialSelects;
}
private int getSubclassPropertyTableNumber(String propertyName, String entityName) {
// When there are duplicated property names in the subclasses
// then propertyMapping.toType( propertyName ) may return an
// incorrect Type. To ensure correct results, lookup the property type
// using the concrete EntityPersister with the specified entityName
// (since the concrete EntityPersister cannot have duplicated property names).
final EntityPersister concreteEntityPersister;
if ( getEntityName().equals( entityName ) ) {
concreteEntityPersister = this;
}
else {
concreteEntityPersister = getFactory().getMetamodel().entityPersister( entityName );
}
Type type = concreteEntityPersister.getPropertyType( propertyName );
if ( type.isAssociationType() && ( (AssociationType) type ).useLHSPrimaryKey() ) {
return 0;
}
final Integer tabnum = propertyTableNumbersByNameAndSubclass.get( entityName + '.' + propertyName );
return tabnum == null ? 0 : tabnum;
}
protected String getSequentialSelect(String entityName) {
return sequentialSelectStringsByEntityName.get( entityName );
}
private String generateSequentialSelect(Loadable persister) {
//if ( this==persister || !hasSequentialSelects ) return null;
//note that this method could easily be moved up to BasicEntityPersister,
//if we ever needed to reuse it from other subclasses
//figure out which tables need to be fetched
AbstractEntityPersister subclassPersister = (AbstractEntityPersister) persister;
HashSet tableNumbers = new HashSet();
String[] props = subclassPersister.getPropertyNames();
String[] classes = subclassPersister.getPropertySubclassNames();
for ( int i = 0; i < props.length; i++ ) {
int propTableNumber = getSubclassPropertyTableNumber( props[i], classes[i] );
if ( isSubclassTableSequentialSelect( propTableNumber ) && !isSubclassTableLazy( propTableNumber ) ) {
tableNumbers.add( propTableNumber );
}
}
if ( tableNumbers.isEmpty() ) {
return null;
}
//figure out which columns are needed
ArrayList columnNumbers = new ArrayList();
final int[] columnTableNumbers = getSubclassColumnTableNumberClosure();
for ( int i = 0; i < getSubclassColumnClosure().length; i++ ) {
if ( tableNumbers.contains( columnTableNumbers[i] ) ) {
columnNumbers.add( i );
}
}
//figure out which formulas are needed
ArrayList formulaNumbers = new ArrayList();
final int[] formulaTableNumbers = getSubclassColumnTableNumberClosure();
for ( int i = 0; i < getSubclassFormulaTemplateClosure().length; i++ ) {
if ( tableNumbers.contains( formulaTableNumbers[i] ) ) {
formulaNumbers.add( i );
}
}
//render the SQL
return renderSelect(
ArrayHelper.toIntArray( tableNumbers ),
ArrayHelper.toIntArray( columnNumbers ),
ArrayHelper.toIntArray( formulaNumbers )
);
}
protected String[] getSubclassTableKeyColumns(int j) {
return subclassTableKeyColumnClosure[j];
}
public String getSubclassTableName(int j) {
return subclassTableNameClosure[j];
}
public int getSubclassTableSpan() {
return subclassTableNameClosure.length;
}
protected boolean isClassOrSuperclassTable(int j) {
return isClassOrSuperclassTable[j];
}
protected boolean isSubclassTableLazy(int j) {
return subclassTableIsLazyClosure[j];
}
protected boolean isNullableTable(int j) {
return isNullableTable[j];
}
protected boolean isNullableSubclassTable(int j) {
return isNullableSubclassTable[j];
}
public String getPropertyTableName(String propertyName) {
Integer index = getEntityMetamodel().getPropertyIndexOrNull( propertyName );
if ( index == null ) {
return null;
}
return qualifiedTableNames[propertyTableNumbers[index]];
}
protected void doPostInstantiate() {
if ( hasSequentialSelects ) {
String[] entityNames = getSubclassClosure();
for ( int i = 1; i < entityNames.length; i++ ) {
Loadable loadable = (Loadable) getFactory().getEntityPersister( entityNames[i] );
if ( !loadable.isAbstract() ) { //perhaps not really necessary...
String sequentialSelect = generateSequentialSelect( loadable );
sequentialSelectStringsByEntityName.put( entityNames[i], sequentialSelect );
}
}
}
}
public boolean isMultiTable() {
return getTableSpan() > 1;
}
public String[] getConstraintOrderedTableNameClosure() {
return constraintOrderedTableNames;
}
public String[][] getContraintOrderedTableKeyColumnClosure() {
return constraintOrderedKeyColumnNames;
}
@Override
public FilterAliasGenerator getFilterAliasGenerator(String rootAlias) {
return new DynamicFilterAliasGenerator( qualifiedTableNames, rootAlias );
}
}