com.gigaspaces.internal.query.predicate.comparison

Class ContainsPredicate

java.lang.Object

com.gigaspaces.internal.serialization.AbstractExternalizable

com.gigaspaces.internal.query.predicate.AbstractSpacePredicate

com.gigaspaces.internal.query.predicate.comparison.ScalarSpacePredicate

com.gigaspaces.internal.query.predicate.comparison.ContainsPredicate

All Implemented Interfaces:

ISpacePredicate, Externalizable, Serializable

Direct Known Subclasses:

ContainsItemPredicate

public class ContainsPredicate
extends ScalarSpacePredicate

Represents a contains predicate. This predicate returns true if and only if the predicate's argument is a collection and contains the expected value.

Since:

8.0

Author:

Anna Pavtulov, Idan Moyal

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected short[]	_containsIndexes
protected String	_fieldPath
protected SpacePropertyInfo[]	_propertyInfo
protected ISpacePredicate	_spacePredicate
protected short	_templateMatchCode
protected String[]	_tokens

Fields inherited from class com.gigaspaces.internal.query.predicate.comparison.ScalarSpacePredicate

_convertedValueWrapper, _expectedValue, functionCallDescription

Constructor Summary

Constructors

Constructor and Description
ContainsPredicate() Default constructor for Externalizable.
ContainsPredicate(Object expectedValue, FunctionCallDescription functionCallDescription, String fieldPath, short templateMatchCode)

Method Summary

Modifier and Type	Method and Description
boolean	execute(Object target) Iterate through the the field's path tokens and when reached to a collection, iterate through its items for property matching (collection[*].property = ?) or call match for regular contains (collection[*] = ?).
protected boolean	executePredicate(Object valueToMatch) Performs a single value matching.
protected short[]	getContainsIndexes()
protected String	getFieldPath()
protected String	getOperatorName()
protected Object	getPreparedExpectedValue(Object target) Since we don't know the generic type of the collection we try to get it from the first matching attempt target.
protected SpacePropertyInfo[]	getPropertyInfo()
protected String[]	getTokens()
protected void	initialize()
protected boolean	match(Object actual, Object expected)
protected boolean	performMatching(Object value, int tokenIndex, int currentContainsIndex)
protected void	readExternalImpl(ObjectInput in)
protected void	writeExternalImpl(ObjectOutput out)

Methods inherited from class com.gigaspaces.internal.query.predicate.comparison.ScalarSpacePredicate

equals, getExpectedValue, toString

Methods inherited from class com.gigaspaces.internal.query.predicate.AbstractSpacePredicate

preparePredicate, requiresCacheManagerForExecution, setCacheManagerForExecution

Methods inherited from class com.gigaspaces.internal.serialization.AbstractExternalizable

readExternal, writeExternal

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Externalizable

readExternal, writeExternal

Field Detail

_tokens

protected String[] _tokens

_propertyInfo

protected SpacePropertyInfo[] _propertyInfo

_spacePredicate

protected ISpacePredicate _spacePredicate

_fieldPath

protected String _fieldPath

_containsIndexes

protected short[] _containsIndexes

_templateMatchCode

protected short _templateMatchCode

Constructor Detail

ContainsPredicate

public ContainsPredicate()

Default constructor for Externalizable.

ContainsPredicate

public ContainsPredicate(Object expectedValue,
                         FunctionCallDescription functionCallDescription,
                         String fieldPath,
                         short templateMatchCode)

Method Detail

match

protected boolean match(Object actual,
                        Object expected)

Specified by:

match in class ScalarSpacePredicate

getOperatorName

protected String getOperatorName()

Specified by:

getOperatorName in class ScalarSpacePredicate

getPreparedExpectedValue

protected Object getPreparedExpectedValue(Object target)

Since we don't know the generic type of the collection we try to get it from the first matching attempt target.

Overrides:

getPreparedExpectedValue in class ScalarSpacePredicate

execute

public boolean execute(Object target)

Iterate through the the field's path tokens and when reached to a collection, iterate through its items for property matching (collection[*].property = ?) or call match for regular contains (collection[*] = ?). The target object should be of ServerEntry type which is passed from the relevant Range object.

Specified by:

execute in interface ISpacePredicate

Overrides:

execute in class ScalarSpacePredicate

Returns:

True if the specified target matches the predicate, false otherwise.

initialize

protected void initialize()

performMatching

protected boolean performMatching(Object value,
                                  int tokenIndex,
                                  int currentContainsIndex)

executePredicate

protected boolean executePredicate(Object valueToMatch)

Performs a single value matching. Initializes the appropriate space predicate for matching if necessary.

getFieldPath

protected String getFieldPath()

getTokens

protected String[] getTokens()

getContainsIndexes

protected short[] getContainsIndexes()

getPropertyInfo

protected SpacePropertyInfo[] getPropertyInfo()

readExternalImpl

protected void readExternalImpl(ObjectInput in)
                         throws IOException,
                                ClassNotFoundException

Overrides:

readExternalImpl in class ScalarSpacePredicate

Throws:

IOException

ClassNotFoundException

writeExternalImpl

protected void writeExternalImpl(ObjectOutput out)
                          throws IOException

Overrides:

writeExternalImpl in class ScalarSpacePredicate

Throws:

IOException