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

Class LeafEvaluator

java.lang.Object

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

All Implemented Interfaces:

Evaluator

public class LeafEvaluator
extends java.lang.Object
implements Evaluator

Evaluates LeafNode assertions on candidates using a database.

Field Summary

Fields

Modifier and Type	Field and Description
private static boolean	COMPARE_GREATER Constants used for comparisons
private static boolean	COMPARE_LESSER
private static int	EQUALITY_MATCH equality matching type constant
private static int	ORDERING_MATCH ordering matching type constant
private ScopeEvaluator	scopeEvaluator ScopeNode evaluator we depend on
private static int	SUBSTRING_MATCH substring matching type constant
private SubstringEvaluator	substringEvaluator Substring node evaluator we depend on

Constructor Summary

Constructors

Constructor and Description
LeafEvaluator(SubstringEvaluator substringEvaluator) Creates a leaf expression node evaluator.

Method Summary

Modifier and Type	Method and Description
private boolean	evalEquality(org.apache.directory.api.ldap.model.filter.EqualityNode<?> node, org.apache.directory.api.ldap.model.entry.Entry entry) Evaluates a simple equality attribute value assertion on a perspective candidate.
private boolean	evalGreaterOrLesser(org.apache.directory.api.ldap.model.filter.SimpleNode<?> node, org.apache.directory.api.ldap.model.entry.Entry entry, boolean isGreaterOrLesser) Evaluates a simple greater than or less than attribute value assertion on a perspective candidate.
private boolean	evalPresence(org.apache.directory.api.ldap.model.schema.AttributeType attributeType, org.apache.directory.api.ldap.model.entry.Entry entry) Evaluates a simple presence attribute value assertion on a perspective candidate.
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.
private org.apache.directory.api.ldap.model.schema.LdapComparator<? super java.lang.Object>	getComparator(org.apache.directory.api.ldap.model.schema.AttributeType attributeType) Gets the comparator for equality matching.
private org.apache.directory.api.ldap.model.schema.MatchingRule	getMatchingRule(org.apache.directory.api.ldap.model.schema.AttributeType attributeType, int matchType) Gets the matching rule for an attributeType.
private org.apache.directory.api.ldap.model.schema.Normalizer	getNormalizer(org.apache.directory.api.ldap.model.schema.AttributeType attributeType) Gets the normalizer for equality matching.
ScopeEvaluator	getScopeEvaluator()
SubstringEvaluator	getSubstringEvaluator()

Methods inherited from class java.lang.Object

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

Field Detail

EQUALITY_MATCH

private static final int EQUALITY_MATCH

equality matching type constant

See Also:

Constant Field Values

ORDERING_MATCH

private static final int ORDERING_MATCH

ordering matching type constant

See Also:

Constant Field Values

SUBSTRING_MATCH

private static final int SUBSTRING_MATCH

substring matching type constant

See Also:

Constant Field Values

substringEvaluator

private SubstringEvaluator substringEvaluator

Substring node evaluator we depend on

scopeEvaluator

private ScopeEvaluator scopeEvaluator

ScopeNode evaluator we depend on

COMPARE_GREATER

private static final boolean COMPARE_GREATER

Constants used for comparisons

See Also:

Constant Field Values

COMPARE_LESSER

private static final boolean COMPARE_LESSER

See Also:

Constant Field Values

Constructor Detail

LeafEvaluator

public LeafEvaluator(SubstringEvaluator substringEvaluator)

Creates a leaf expression node evaluator.

Parameters:

schemaManager - The server schemaManager

Method Detail

getScopeEvaluator

public ScopeEvaluator getScopeEvaluator()

getSubstringEvaluator

public SubstringEvaluator getSubstringEvaluator()

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

evalGreaterOrLesser

private boolean evalGreaterOrLesser(org.apache.directory.api.ldap.model.filter.SimpleNode<?> node,
                                    org.apache.directory.api.ldap.model.entry.Entry entry,
                                    boolean isGreaterOrLesser)
                             throws org.apache.directory.api.ldap.model.exception.LdapException

Evaluates a simple greater than or less than attribute value assertion on a perspective candidate.

Parameters:

node - the greater than or less than node to evaluate

entry - the perspective candidate

isGreater - true if it is a greater than or equal to comparison, false if it is a less than or equal to comparison.

Returns:

the ava evaluation on the perspective candidate

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there is a database access failure

evalPresence

private boolean evalPresence(org.apache.directory.api.ldap.model.schema.AttributeType attributeType,
                             org.apache.directory.api.ldap.model.entry.Entry entry)
                      throws org.apache.directory.api.ldap.model.exception.LdapException

Evaluates a simple presence attribute value assertion on a perspective candidate.

Parameters:

attrId - the name of the attribute tested for presence

entry - the perspective candidate

Returns:

the ava evaluation on the perspective candidate

Throws:

org.apache.directory.api.ldap.model.exception.LdapException

evalEquality

private boolean evalEquality(org.apache.directory.api.ldap.model.filter.EqualityNode<?> node,
                             org.apache.directory.api.ldap.model.entry.Entry entry)
                      throws org.apache.directory.api.ldap.model.exception.LdapException

Evaluates a simple equality attribute value assertion on a perspective candidate.

Parameters:

node - the equality node to evaluate

entry - the perspective candidate

Returns:

the ava evaluation on the perspective candidate

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there is a database access failure

getComparator

private org.apache.directory.api.ldap.model.schema.LdapComparator<? super java.lang.Object> getComparator(org.apache.directory.api.ldap.model.schema.AttributeType attributeType)
                                                                                                   throws org.apache.directory.api.ldap.model.exception.LdapException

Gets the comparator for equality matching.

Parameters:

attributeType - the attributeType

Returns:

the comparator for equality matching

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there is a failure

getNormalizer

private org.apache.directory.api.ldap.model.schema.Normalizer getNormalizer(org.apache.directory.api.ldap.model.schema.AttributeType attributeType)
                                                                     throws org.apache.directory.api.ldap.model.exception.LdapException

Gets the normalizer for equality matching.

Parameters:

attributeType - the attributeType

Returns:

the normalizer for equality matching

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there is a failure

getMatchingRule

private org.apache.directory.api.ldap.model.schema.MatchingRule getMatchingRule(org.apache.directory.api.ldap.model.schema.AttributeType attributeType,
                                                                                int matchType)
                                                                         throws org.apache.directory.api.ldap.model.exception.LdapException

Gets the matching rule for an attributeType.

Parameters:

attributeType - the attributeType

Returns:

the matching rule

Throws:

org.apache.directory.api.ldap.model.exception.LdapException - if there is a failure