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 com.webobjects.eoaccess.EOQualifierSQLGeneration.Support

Implements the SQL generation for the exists qualifier.

Constructor Summary

ERXExistsQualifier.ExistsQualifierSQLGenerationSupport()
Public constructor

Method Summary

com.webobjects.eocontrol.EOQualifier	qualifierMigratedFromEntityRelationshipPath(com.webobjects.eocontrol.EOQualifier qualifier, com.webobjects.eoaccess.EOEntity entity, java.lang.String relationshipPath) Implementation of the EOQualifierSQLGeneration interface.
com.webobjects.eocontrol.EOQualifier	schemaBasedQualifierWithRootEntity(com.webobjects.eocontrol.EOQualifier qualifier, com.webobjects.eoaccess.EOEntity entity) Implementation of the EOQualifierSQLGeneration interface.
java.lang.String	sqlStringForSQLExpression(com.webobjects.eocontrol.EOQualifier qualifier, com.webobjects.eoaccess.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

ERXExistsQualifier.ExistsQualifierSQLGenerationSupport

public ERXExistsQualifier.ExistsQualifierSQLGenerationSupport()

Public constructor

Method Detail

sqlStringForSQLExpression

public java.lang.String sqlStringForSQLExpression(com.webobjects.eocontrol.EOQualifier qualifier,
                                                  com.webobjects.eoaccess.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 com.webobjects.eoaccess.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 com.webobjects.eocontrol.EOQualifier schemaBasedQualifierWithRootEntity(com.webobjects.eocontrol.EOQualifier qualifier,
                                                                               com.webobjects.eoaccess.EOEntity entity)

Implementation of the EOQualifierSQLGeneration interface. Just clones the qualifier.

Specified by:

schemaBasedQualifierWithRootEntity in class com.webobjects.eoaccess.EOQualifierSQLGeneration.Support

Parameters:

entity - an entity

Returns:

clone of the current qualifier

qualifierMigratedFromEntityRelationshipPath

public com.webobjects.eocontrol.EOQualifier qualifierMigratedFromEntityRelationshipPath(com.webobjects.eocontrol.EOQualifier qualifier,
                                                                                        com.webobjects.eoaccess.EOEntity entity,
                                                                                        java.lang.String relationshipPath)

Implementation of the EOQualifierSQLGeneration interface. Just clones the qualifier.

Specified by:

qualifierMigratedFromEntityRelationshipPath in class com.webobjects.eoaccess.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