org.apache.directory.server.xdbm.search.evaluator

Class AndEvaluator

java.lang.Object

org.apache.directory.server.xdbm.search.evaluator.AndEvaluator

All Implemented Interfaces:

Evaluator<org.apache.directory.api.ldap.model.filter.AndNode>

public class AndEvaluator
extends Object
implements Evaluator<org.apache.directory.api.ldap.model.filter.AndNode>

An Evaluator for logical conjunction (AND) expressions.

Author:

Apache Directory Project

Constructor Summary

Constructors

Constructor and Description
AndEvaluator(org.apache.directory.api.ldap.model.filter.AndNode node, List<Evaluator<? extends org.apache.directory.api.ldap.model.filter.ExprNode>> evaluators) Creates an instance of AndEvaluator

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(org.apache.directory.api.ldap.model.entry.Entry entry) Evaluates whether or not a candidate, satisfies the expression associated with this Evaluator .
boolean	evaluate(org.apache.directory.server.core.api.partition.PartitionTxn partitionTxn, IndexEntry<?,String> indexEntry) Evaluates a candidate to determine if a filter expression selects it.
org.apache.directory.api.ldap.model.filter.AndNode	getExpression() Gets the expression used by this expression Evaluator.
String	toString()
String	toString(String tabs) Pretty-print an Evaluator

Methods inherited from class java.lang.Object

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

Constructor Detail

AndEvaluator

public AndEvaluator(org.apache.directory.api.ldap.model.filter.AndNode node,
                    List<Evaluator<? extends org.apache.directory.api.ldap.model.filter.ExprNode>> evaluators)

Creates an instance of AndEvaluator

Parameters:

node - The And Node

evaluators - The list of evaluators for all the contaned nodes

Method Detail

evaluate

public boolean evaluate(org.apache.directory.api.ldap.model.entry.Entry entry)
                 throws org.apache.directory.api.ldap.model.exception.LdapException

Evaluates whether or not a candidate, satisfies the expression associated with this Evaluator .

Specified by:

evaluate in interface Evaluator<org.apache.directory.api.ldap.model.filter.AndNode>

Parameters:

entry - the candidate entry

Returns:

true if filter selects the candidate false otherwise

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there are faults during evaluation

evaluate

public boolean evaluate(org.apache.directory.server.core.api.partition.PartitionTxn partitionTxn,
                        IndexEntry<?,String> indexEntry)
                 throws org.apache.directory.api.ldap.model.exception.LdapException

Evaluates a candidate to determine if a filter expression selects it. If an IndexEntry does has a null reference to the entry object, this Evaluator may set it if it has to access the full entry within the master table of the store. Subsequent evaluations on the IndexEntry then need not access the store to retreive the entry if they need to access it's attributes.

Specified by:

evaluate in interface Evaluator<org.apache.directory.api.ldap.model.filter.AndNode>

Parameters:

partitionTxn - The transaction to use

indexEntry - the index record of the entry to evaluate

Returns:

true if filter selects the candidate false otherwise

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there are faults during evaluation

getExpression

public org.apache.directory.api.ldap.model.filter.AndNode getExpression()

Gets the expression used by this expression Evaluator.

Specified by:

getExpression in interface Evaluator<org.apache.directory.api.ldap.model.filter.AndNode>

Returns:

the AST for the expression

toString

public String toString(String tabs)

Description copied from interface: Evaluator

Pretty-print an Evaluator

Specified by:

toString in interface Evaluator<org.apache.directory.api.ldap.model.filter.AndNode>

Parameters:

tabs - The tabs to add before the evaluator

Returns:

The pretty-printed evaluator and its descendants

See Also:

Object.toString()

toString

public String toString()

Overrides:

toString in class Object

See Also:

Object.toString()