com.webobjects.eoaccess
Class EOQualifierSQLGeneration.Support

java.lang.Object
  |
  +--com.webobjects.eoaccess.EOQualifierSQLGeneration.Support

Enclosing class:

EOQualifierSQLGeneration

public abstract static class EOQualifierSQLGeneration.Support

extends Object

The abstract EOQualifierSQLGeneration.Support class provides basic functionality to subclasses that implement the EOQualifierSQLGeneration interface for specific qualifier types.

See Also:

EOQualifierSQLGeneration, EOSQLQualifier

Constructor Summary

EOQualifierSQLGeneration.Support()

Method Summary

abstract EOQualifier	qualifierMigratedFromEntityRelationshipPath(EOQualifier qualifier, EOEntity entity, String relationshipPath) Creates a new version of qualifier, translates all the keys to work with the entity specified in relationshipPath.
abstract EOQualifier	schemaBasedQualifierWithRootEntity(EOQualifier qualifier, EOEntity entity) Returns an EOQualifier that is translated so that it is based on the foreign keys of the entity.
static void	setSupportForClass(EOQualifierSQLGeneration.Support support, Class aClass) Sets the Support class to be used internally for the specified qualifier class.
abstract String	sqlStringForSQLExpression(EOQualifier qualifier, EOSQLExpression sqlExpression) Returns the SQL String for the qualifier within the context of sqlExpression.
static EOQualifierSQLGeneration.Support	supportForClass(Class aClass) Returns the Support class for the specified qualifier class.

Methods inherited from class java.lang.Object

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

Constructor Detail

EOQualifierSQLGeneration.Support

public EOQualifierSQLGeneration.Support()

Method Detail

qualifierMigratedFromEntityRelationshipPath

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

Creates a new version of qualifier, translates all the keys to work with the entity specified in relationshipPath. The receiver's keys are all specified in terms of entity. For example, assume that an Employee entity has a relationship named "department" to a Department entity. You could migrate a qualifier described in terms of the Employee entity (department.name = "Finance", for example) to a qualifier described in terms of the Department entity (name = "Finance"). To do so, send a qualifierMigratedFromEntityRelationshipPath message with the Employee entity as the entity and "department" as the relationship path.

Parameters:

qualifier - original EOQualifier

entity - original EOEntity

relationshipPath - relationship to migrate across

Returns:

an EOQualifier

schemaBasedQualifierWithRootEntity

public abstract EOQualifier schemaBasedQualifierWithRootEntity(EOQualifier qualifier,
                                                               EOEntity entity)

Returns an EOQualifier that is translated so that it is based on the foreign keys of the entity.

Parameters:

qualifier - an EOQualifier

entity - an EOEntity

Returns:

an EOQualifier

setSupportForClass

public static void setSupportForClass(EOQualifierSQLGeneration.Support support,
                                      Class aClass)

Sets the Support class to be used internally for the specified qualifier class.

Parameters:

support - the Support class to be used

aClass - the associated EOQualifier class

sqlStringForSQLExpression

public abstract String sqlStringForSQLExpression(EOQualifier qualifier,
                                                 EOSQLExpression sqlExpression)

Returns the SQL String for the qualifier within the context of sqlExpression.

Parameters:

qualifier - an EOQualifier within sqlExpression

sqlExpression - containing EOSQLExpression

Returns:

an SQL String

supportForClass

public static EOQualifierSQLGeneration.Support supportForClass(Class aClass)

Returns the Support class for the specified qualifier class.

Parameters:

aClass - the EOQualifier class involved

Returns:

the Support class associated with aClass