er.extensions
Class ERXQualifierInSubquery

java.lang.Object
  com.webobjects.eocontrol.EOQualifier
      er.extensions.ERXQualifierInSubquery

All Implemented Interfaces:

Cloneable, EOQualifierEvaluation, EOQualifierSQLGeneration, Serializable

public class ERXQualifierInSubquery

extends EOQualifier

implements EOQualifierSQLGeneration, Cloneable

Generates a subquery for the qualifier given in argument ... t0.ID IN (SELECT t0.ID FROM X WHERE ) .. this class can be used to work around the EOF bug where OR queries involving many-to-manies are incorrectly generated It will also generate ... t0.FOREIGN_KEY_ID in (select t1.ID from X where ) with the 3 arg constructor

See Also:

Serialized Form

Nested Class Summary

Nested classes inherited from class com.webobjects.eocontrol.EOQualifier

EOQualifier.Comparison, EOQualifier.ComparisonSupport, EOQualifier.QualifierVariableSubstitutionException

Nested classes inherited from class com.webobjects.eoaccess.EOQualifierSQLGeneration

EOQualifierSQLGeneration._AndQualifierSupport, EOQualifierSQLGeneration._KeyComparisonQualifierSupport, EOQualifierSQLGeneration._KeyValueQualifierSupport, EOQualifierSQLGeneration._NotQualifierSupport, EOQualifierSQLGeneration._OrQualifierSupport, EOQualifierSQLGeneration.Support

Field Summary

protected String	attributeName holds the attribute name
protected String	destinationAttName
protected String	entityName holds the entity name
static ERXLogger	log logging support
protected EOQualifier	qualifier holds the subqualifier

Fields inherited from class com.webobjects.eocontrol.EOQualifier

_CLASS, QualifierOperatorCaseInsensitiveLike, QualifierOperatorContains, QualifierOperatorEqual, QualifierOperatorGreaterThan, QualifierOperatorGreaterThanOrEqualTo, QualifierOperatorLessThan, QualifierOperatorLessThanOrEqualTo, QualifierOperatorLike, QualifierOperatorNotEqual

Constructor Summary

ERXQualifierInSubquery(EOQualifier q)
Public single argument constructor.

ERXQualifierInSubquery(EOQualifier q, String entityName, String attributeName, String destinationAttName)
Public three argument constructor.

Method Summary

void	addQualifierKeysToSet(NSMutableSet aSet) Only used with qualifier keys which are not supported in this qualifier at this time.
Object	clone() Implementation of the Clonable interface.
EOQualifier	qualifierMigratedFromEntityRelationshipPath(EOEntity anEntity, String aPath) Implementation of the EOQualifierSQLGeneration interface.
EOQualifier	qualifierWithBindings(NSDictionary someBindings, boolean requiresAll) Creates another qualifier after replacing the values of the bindings.
EOQualifier	schemaBasedQualifierWithRootEntity(EOEntity anEntity) Implementation of the EOQualifierSQLGeneration interface.
String	sqlStringForSQLExpression(EOSQLExpression e) Generates the sql string for the given sql expression.
String	toString() Description of the qualifier
void	validateKeysWithRootClassDescription(EOClassDescription aClassDescription) This qualifier does not perform validation.

Methods inherited from class com.webobjects.eocontrol.EOQualifier

_accept, _isEmpty, allQualifierKeys, allQualifierOperators, bindingKeys, evaluateWithObject, filterArrayWithQualifier, filteredArrayWithQualifier, keyPathForBindingKey, operatorSelectorForSelectorNamed, operatorSelectorForString, qualifierToMatchAllValues, qualifierToMatchAnyValue, qualifierWithQualifierFormat, relationalQualifierOperators, stringForOperatorSelector

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final ERXLogger log

logging support

qualifier

protected EOQualifier qualifier

holds the subqualifier

entityName

protected String entityName

holds the entity name

attributeName

protected String attributeName

holds the attribute name

destinationAttName

protected String destinationAttName

Constructor Detail

ERXQualifierInSubquery

public ERXQualifierInSubquery(EOQualifier q)

Public single argument constructor. Use this constructor for sub-qualification on the same table.

Parameters:

q - sub-qualifier

ERXQualifierInSubquery

public ERXQualifierInSubquery(EOQualifier q,
                              String entityName,
                              String attributeName,
                              String destinationAttName)

Public three argument constructor. Use this constructor for for building queries on foreign key attributes of the current entity.

Parameters:

q - sub qualifier

entityName - of the sub qualification

attributeName - foriegn key attribute name

Method Detail

addQualifierKeysToSet

public void addQualifierKeysToSet(NSMutableSet aSet)

Only used with qualifier keys which are not supported in this qualifier at this time. Does nothing.

Parameters:

aSet - of qualifier keys

qualifierWithBindings

public EOQualifier qualifierWithBindings(NSDictionary someBindings,
                                         boolean requiresAll)

Creates another qualifier after replacing the values of the bindings. Since this qualifier does not support qualifier binding keys a clone of the qualifier is returned.

Parameters:

someBindings - some bindings

requiresAll - tells if the qualifier requires all bindings

Returns:

clone of the current qualifier.

validateKeysWithRootClassDescription

public void validateKeysWithRootClassDescription(EOClassDescription aClassDescription)

This qualifier does not perform validation. This is a no-op method.

Parameters:

aClassDescription - to validation the qualifier keys against.

sqlStringForSQLExpression

public String sqlStringForSQLExpression(EOSQLExpression e)

Generates the sql string for the given sql expression. Bulk of the logic for generating the sub-query is in this method.

Specified by:

sqlStringForSQLExpression in interface EOQualifierSQLGeneration

Parameters:

e - a given sql expression

Returns:

sql string for the current sub-query.

schemaBasedQualifierWithRootEntity

public EOQualifier schemaBasedQualifierWithRootEntity(EOEntity anEntity)

Implementation of the EOQualifierSQLGeneration interface. Just clones the qualifier.

Specified by:

schemaBasedQualifierWithRootEntity in interface EOQualifierSQLGeneration

Parameters:

anEntity - an entity.

Returns:

clone of the current qualifier.

qualifierMigratedFromEntityRelationshipPath

public EOQualifier qualifierMigratedFromEntityRelationshipPath(EOEntity anEntity,
                                                               String aPath)

Implementation of the EOQualifierSQLGeneration interface. Just clones the qualifier.

Specified by:

qualifierMigratedFromEntityRelationshipPath in interface EOQualifierSQLGeneration

Parameters:

anEntity - an entity

aPath - relationship path

Returns:

clone of the current qualifier.

toString

public String toString()

Description of the qualifier

Returns:

human readable description of the qualifier.

clone

public Object clone()

Implementation of the Clonable interface. Clones the current qualifier.

Returns:

cloned qualifier.