er.extensions.eof.qualifiers

Class ERXExistsQualifier.ExistsQualifierSQLGenerationSupport

java.lang.Object

com.webobjects.eoaccess.EOQualifierSQLGeneration.Support

er.extensions.eof.qualifiers.ERXExistsQualifier.ExistsQualifierSQLGenerationSupport

Enclosing class:

ERXExistsQualifier

public static class ERXExistsQualifier.ExistsQualifierSQLGenerationSupport
extends EOQualifierSQLGeneration.Support

Implements the SQL generation for the exists qualifier.

Constructor Summary

Constructors

Constructor and Description
ExistsQualifierSQLGenerationSupport() Public constructor

Method Summary

Modifier and Type	Method and Description
EOQualifier	qualifierMigratedFromEntityRelationshipPath(EOQualifier qualifier, EOEntity entity, String relationshipPath) Implementation of the EOQualifierSQLGeneration interface.
EOQualifier	schemaBasedQualifierWithRootEntity(EOQualifier qualifier, EOEntity entity) Implementation of the EOQualifierSQLGeneration interface.
String	sqlStringForSQLExpression(EOQualifier qualifier, EOSQLExpression expression) Generates the EXISTS SQL string for the given SQL expression.

Methods inherited from class com.webobjects.eoaccess.EOQualifierSQLGeneration.Support

_flattenRelationshipPath, _optimizeQualifierKeyPath, _qualifierMigratedFromEntityRelationshipPath, _qualifierMigratedToSubEntityFromParentEntity, _schemaBasedQualifierWithRootEntity, _sqlStringForSQLExpression, _translateKeyAcrossRelationshipPath, setSupportForClass, supportForClass

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExistsQualifierSQLGenerationSupport

public ExistsQualifierSQLGenerationSupport()

Public constructor

Method Detail

sqlStringForSQLExpression

public String sqlStringForSQLExpression(EOQualifier qualifier,
                                        EOSQLExpression expression)

Generates the EXISTS SQL string for the given SQL expression. The bulk of the logic for generating the sub-query is in this method.

Specified by:

sqlStringForSQLExpression in class EOQualifierSQLGeneration.Support

Parameters:

qualifier - for which to generate the SQL

expression - to use during SQL generation

Returns:

SQL string for the current sub-query

schemaBasedQualifierWithRootEntity

public EOQualifier schemaBasedQualifierWithRootEntity(EOQualifier qualifier,
                                                      EOEntity entity)

Implementation of the EOQualifierSQLGeneration interface. Just clones the qualifier.

Specified by:

schemaBasedQualifierWithRootEntity in class EOQualifierSQLGeneration.Support

Parameters:

entity - an entity

Returns:

clone of the current qualifier

qualifierMigratedFromEntityRelationshipPath

public EOQualifier qualifierMigratedFromEntityRelationshipPath(EOQualifier qualifier,
                                                               EOEntity entity,
                                                               String relationshipPath)

Implementation of the EOQualifierSQLGeneration interface. Just clones the qualifier.

Specified by:

qualifierMigratedFromEntityRelationshipPath in class EOQualifierSQLGeneration.Support

Parameters:

qualifier - to migrate

entity - to which the qualifier should be migrated

relationshipPath - upon which to base the migration

Returns:

clone of the current qualifier