org.apache.directory.server.core.api.event

Class ExpressionEvaluator

java.lang.Object

org.apache.directory.server.core.api.event.ExpressionEvaluator

All Implemented Interfaces:

Evaluator

public class ExpressionEvaluator
extends java.lang.Object
implements Evaluator

Top level filter expression evaluator implementation.

Field Summary

Fields

Modifier and Type	Field and Description
private LeafEvaluator	leafEvaluator Leaf Evaluator flyweight use for leaf filter assertions

Constructor Summary

Constructors

Constructor and Description
ExpressionEvaluator(LeafEvaluator leafEvaluator) Creates a top level Evaluator where leaves are delegated to a leaf node evaluator which is already provided.
ExpressionEvaluator(org.apache.directory.api.ldap.model.schema.SchemaManager schemaManager) Creates a top level Evaluator where leaves are delegated to a leaf node evaluator which will be created.

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(org.apache.directory.api.ldap.model.filter.ExprNode node, org.apache.directory.api.ldap.model.name.Dn dn, org.apache.directory.api.ldap.model.entry.Entry entry) Evaluates a candidate to determine if a filter expression selects it.
LeafEvaluator	getLeafEvaluator() Gets the leaf evaluator used by this top level expression evaluator.

Methods inherited from class java.lang.Object

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

Field Detail

leafEvaluator

private LeafEvaluator leafEvaluator

Leaf Evaluator flyweight use for leaf filter assertions

Constructor Detail

ExpressionEvaluator

public ExpressionEvaluator(LeafEvaluator leafEvaluator)

Creates a top level Evaluator where leaves are delegated to a leaf node evaluator which is already provided.

Parameters:

leafEvaluator - handles leaf node evaluation.

ExpressionEvaluator

public ExpressionEvaluator(org.apache.directory.api.ldap.model.schema.SchemaManager schemaManager)

Creates a top level Evaluator where leaves are delegated to a leaf node evaluator which will be created.

Parameters:

schemaManager - The server schemaManager

Method Detail

getLeafEvaluator

public LeafEvaluator getLeafEvaluator()

Gets the leaf evaluator used by this top level expression evaluator.

Returns:

the leaf evaluator used by this top level expression evaluator

evaluate

public boolean evaluate(org.apache.directory.api.ldap.model.filter.ExprNode node,
                        org.apache.directory.api.ldap.model.name.Dn dn,
                        org.apache.directory.api.ldap.model.entry.Entry entry)
                 throws org.apache.directory.api.ldap.model.exception.LdapException

Evaluates a candidate to determine if a filter expression selects it.

Specified by:

evaluate in interface Evaluator

dn - the normalized distinguished name of the entry being tested

entry - the entry to evaluate

Returns:

true if the filter selects the candidate false otherwise

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there is a database fault during evaluation