Java Joinable.consumesEntityAlias方法代码示例

import org.hibernate.persister.entity.Joinable; //导入方法依赖的package包/类
/**
 * Generate a select list of columns containing all properties of the entity classes
 */
protected final String selectString(List associations)
throws MappingException {

	if ( associations.size()==0 ) {
		return "";
	}
	else {
		StringBuilder buf = new StringBuilder( associations.size() * 100 );
		int entityAliasCount=0;
		int collectionAliasCount=0;
		for ( int i=0; i<associations.size(); i++ ) {
			OuterJoinableAssociation join = (OuterJoinableAssociation) associations.get(i);
			OuterJoinableAssociation next = (i == associations.size() - 1)
			        ? null
			        : ( OuterJoinableAssociation ) associations.get( i + 1 );
			final Joinable joinable = join.getJoinable();
			final String entitySuffix = ( suffixes == null || entityAliasCount >= suffixes.length )
			        ? null
			        : suffixes[entityAliasCount];
			final String collectionSuffix = ( collectionSuffixes == null || collectionAliasCount >= collectionSuffixes.length )
			        ? null
			        : collectionSuffixes[collectionAliasCount];
			final String selectFragment = joinable.selectFragment(
					next == null ? null : next.getJoinable(),
					next == null ? null : next.getRHSAlias(),
					join.getRHSAlias(),
					entitySuffix,
			        collectionSuffix,
					join.getJoinType()==JoinType.LEFT_OUTER_JOIN
			);
			if (selectFragment.trim().length() > 0) {
				buf.append(", ").append(selectFragment);
			}
			if ( joinable.consumesEntityAlias() ) entityAliasCount++;
			if ( joinable.consumesCollectionAlias() && join.getJoinType()==JoinType.LEFT_OUTER_JOIN ) collectionAliasCount++;
		}
		return buf.toString();
	}
}
 

import org.hibernate.persister.entity.Joinable; //导入方法依赖的package包/类
protected String generateTableAlias(int n, String path, Joinable joinable) {
	if ( joinable.consumesEntityAlias() ) {
		final Criteria subcriteria = translator.getCriteria(path);
		String sqlAlias = subcriteria==null ? null : translator.getSQLAlias(subcriteria);
		if (sqlAlias!=null) {
			userAliasList.add( subcriteria.getAlias() ); //alias may be null
			return sqlAlias; //EARLY EXIT
		}
		else {
			userAliasList.add(null);
		}
	}
	return super.generateTableAlias( n + translator.getSQLAliasCount(), path, joinable );
}
 

import org.hibernate.persister.entity.Joinable; //导入方法依赖的package包/类
@Override
protected String generateTableAlias(int n, PropertyPath path, Joinable joinable) {
	// TODO: deal with side-effects (changes to includeInResultRowList, userAliasList, resultTypeList)!!!

	// for collection-of-entity, we are called twice for given "path"
	// once for the collection Joinable, once for the entity Joinable.
	// the second call will/must "consume" the alias + perform side effects according to consumesEntityAlias()
	// for collection-of-other, however, there is only one call 
	// it must "consume" the alias + perform side effects, despite what consumeEntityAlias() return says
	// 
	// note: the logic for adding to the userAliasList is still strictly based on consumesEntityAlias return value
	boolean checkForSqlAlias = joinable.consumesEntityAlias();

	if ( !checkForSqlAlias && joinable.isCollection() ) {
		// is it a collection-of-other (component or value) ?
		CollectionPersister collectionPersister = (CollectionPersister)joinable;
		Type elementType = collectionPersister.getElementType();
		if ( elementType.isComponentType() || !elementType.isEntityType() ) {
			checkForSqlAlias = true;
			}
	}

	String sqlAlias = null;

	if ( checkForSqlAlias ) {
		final Criteria subcriteria = translator.getCriteria( path.getFullPath() );
		sqlAlias = subcriteria==null ? null : translator.getSQLAlias(subcriteria);
		
		if (joinable.consumesEntityAlias() && ! translator.hasProjection()) {
			includeInResultRowList.add( subcriteria != null && subcriteria.getAlias() != null );
			if (sqlAlias!=null) {
				if ( subcriteria.getAlias() != null ) {
					userAliasList.add( subcriteria.getAlias() );
					resultTypeList.add( translator.getResultType( subcriteria ) );
				}
			}
		}
	}

	if (sqlAlias == null) {
		sqlAlias = super.generateTableAlias( n + translator.getSQLAliasCount(), path, joinable );
	}

	return sqlAlias;
}
 

import org.hibernate.persister.entity.Joinable; //导入方法依赖的package包/类
/**
 * Generate a select list of columns containing all properties of the entity classes
 */
protected final String selectString(List associations)
throws MappingException {

	if ( associations.size()==0 ) {
		return "";
	}
	else {
		StringBuffer buf = new StringBuffer( associations.size() * 100 )
			.append(", ");
		int entityAliasCount=0;
		int collectionAliasCount=0;
		for ( int i=0; i<associations.size(); i++ ) {
			OuterJoinableAssociation join = (OuterJoinableAssociation) associations.get(i);
			OuterJoinableAssociation next = (i == associations.size() - 1)
			        ? null
			        : ( OuterJoinableAssociation ) associations.get( i + 1 );
			final Joinable joinable = join.getJoinable();
			final String entitySuffix = ( suffixes == null || entityAliasCount >= suffixes.length )
			        ? null
			        : suffixes[entityAliasCount];
			final String collectionSuffix = ( collectionSuffixes == null || collectionAliasCount >= collectionSuffixes.length )
			        ? null
			        : collectionSuffixes[collectionAliasCount];
			final String selectFragment = joinable.selectFragment(
					next == null ? null : next.getJoinable(),
					next == null ? null : next.getRHSAlias(),
					join.getRHSAlias(),
					entitySuffix,
			        collectionSuffix,
					join.getJoinType()==JoinFragment.LEFT_OUTER_JOIN
			);
			buf.append(selectFragment);
			if ( joinable.consumesEntityAlias() ) entityAliasCount++;
			if ( joinable.consumesCollectionAlias() && join.getJoinType()==JoinFragment.LEFT_OUTER_JOIN ) collectionAliasCount++;
			if (
				i<associations.size()-1 &&
				selectFragment.trim().length()>0
			) {
				buf.append(", ");
			}
		}
		return buf.toString();
	}
}