Package com.gigaspaces.internal.query

Class ExactValueIndexScanner

java.lang.Object

com.gigaspaces.internal.query.AbstractQueryIndex

com.gigaspaces.internal.query.ExactValueIndexScanner

All Implemented Interfaces:

IQueryIndexScanner, SmartExternalizable, Externalizable, Serializable

Direct Known Subclasses:

ExacValueCompoundIndexScanner

public class ExactValueIndexScanner
extends AbstractQueryIndex

Scans the index with the defined index name only for entries that match the exact index value

Since:

7.1

Author:

anna

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.gigaspaces.internal.query.IQueryIndexScanner

IQueryIndexScanner.ResultIndicator

Field Summary

Fields inherited from interface com.gigaspaces.internal.query.IQueryIndexScanner

RESULT_IGNORE_INDEX, RESULT_NO_MATCH

Constructor Summary

Constructors

Constructor	Description
ExactValueIndexScanner()
ExactValueIndexScanner(String indexName, Object indexValue)

Method Summary

Modifier and Type	Method	Description
protected IObjectsList	getEntriesByIndex(Context context, TypeData typeData, TypeDataIndex<Object> index, boolean fifoGroupsScan)
Object	getIndexValue()	The value of the index - objects are indexed and stored according to specific index value.
protected boolean	hasIndexValue()
void	readExternal(ObjectInput in)
boolean	requiresOrderedIndex()	Returns true if this index scanner requires an ordered index
protected void	setIndexValue(Object indexValue)
boolean	supportsFifoOrder()	equality matching preserves fifo order
boolean	supportsTemplateIndex()	Returns true if this index scanner supports template indexing
void	writeExternal(ObjectOutput out)

Methods inherited from class com.gigaspaces.internal.query.AbstractQueryIndex

getIndexedEntriesByType, getIndexName, isExtendsAbstractQueryIndex, isUidsScanner, requiresValueForIndexSearch

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.gigaspaces.internal.query.IQueryIndexScanner

getIndexUsageCounter

Methods inherited from interface com.gigaspaces.serialization.SmartExternalizable

enabledSmartExternalizableWithReference

Constructor Details

ExactValueIndexScanner

public ExactValueIndexScanner()

ExactValueIndexScanner

public ExactValueIndexScanner(String indexName,
 Object indexValue)

Method Details

getEntriesByIndex

protected IObjectsList getEntriesByIndex(Context context,
 TypeData typeData,
 TypeDataIndex<Object> index,
 boolean fifoGroupsScan)

Specified by:

getEntriesByIndex in class AbstractQueryIndex

requiresOrderedIndex

public boolean requiresOrderedIndex()

Description copied from interface: IQueryIndexScanner

Returns true if this index scanner requires an ordered index

hasIndexValue

protected boolean hasIndexValue()

Specified by:

hasIndexValue in class AbstractQueryIndex

getIndexValue

public Object getIndexValue()

Description copied from interface: IQueryIndexScanner

The value of the index - objects are indexed and stored according to specific index value. This value will be used to search the index structure for entries that match this value .

setIndexValue

protected void setIndexValue(Object indexValue)

supportsFifoOrder

public boolean supportsFifoOrder()

equality matching preserves fifo order

Specified by:

supportsFifoOrder in interface IQueryIndexScanner

Overrides:

supportsFifoOrder in class AbstractQueryIndex

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Overrides:

readExternal in class AbstractQueryIndex

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Overrides:

writeExternal in class AbstractQueryIndex

Throws:

IOException

supportsTemplateIndex

public boolean supportsTemplateIndex()

Description copied from interface: IQueryIndexScanner

Returns true if this index scanner supports template indexing