org.apache.flink.api.java.typeutils.runtime

Class PojoComparator<T>

java.lang.Object

org.apache.flink.api.common.typeutils.TypeComparator<T>

org.apache.flink.api.common.typeutils.CompositeTypeComparator<T>

org.apache.flink.api.java.typeutils.runtime.PojoComparator<T>

All Implemented Interfaces:

Serializable

public final class PojoComparator<T>
extends org.apache.flink.api.common.typeutils.CompositeTypeComparator<T>
implements Serializable

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
PojoComparator(Field[] keyFields, org.apache.flink.api.common.typeutils.TypeComparator<?>[] comparators, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer, Class<T> type)

Method Summary

Modifier and Type	Method and Description
Object	accessField(Field field, Object object) This method is handling the IllegalAccess exceptions of Field.get()
int	compare(T first, T second)
int	compareSerialized(org.apache.flink.core.memory.DataInputView firstSource, org.apache.flink.core.memory.DataInputView secondSource)
int	compareToReference(org.apache.flink.api.common.typeutils.TypeComparator<T> referencedComparator)
PojoComparator<T>	duplicate()
boolean	equalToReference(T candidate)
int	extractKeys(Object record, Object[] target, int index)
void	getFlatComparator(List<org.apache.flink.api.common.typeutils.TypeComparator> flatComparators)
Field[]	getKeyFields()
int	getNormalizeKeyLen()
int	hash(T value)
boolean	invertNormalizedKey()
boolean	isNormalizedKeyPrefixOnly(int keyBytes)
void	putNormalizedKey(T value, org.apache.flink.core.memory.MemorySegment target, int offset, int numBytes)
T	readWithKeyDenormalization(T reuse, org.apache.flink.core.memory.DataInputView source)
void	setReference(T toCompare)
boolean	supportsNormalizedKey()
boolean	supportsSerializationWithKeyNormalization()
void	writeWithKeyNormalization(T record, org.apache.flink.core.memory.DataOutputView target)

Methods inherited from class org.apache.flink.api.common.typeutils.CompositeTypeComparator

getFlatComparators

Methods inherited from class org.apache.flink.api.common.typeutils.TypeComparator

compareAgainstReference, supportsCompareAgainstReference

Methods inherited from class java.lang.Object

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

Constructor Detail

PojoComparator

public PojoComparator(Field[] keyFields,
                      org.apache.flink.api.common.typeutils.TypeComparator<?>[] comparators,
                      org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer,
                      Class<T> type)

Method Detail

getKeyFields

public Field[] getKeyFields()

getFlatComparator

public void getFlatComparator(List<org.apache.flink.api.common.typeutils.TypeComparator> flatComparators)

Specified by:

getFlatComparator in class org.apache.flink.api.common.typeutils.CompositeTypeComparator<T>

accessField

public final Object accessField(Field field,
                                Object object)

This method is handling the IllegalAccess exceptions of Field.get()

hash

public int hash(T value)

Specified by:

hash in class org.apache.flink.api.common.typeutils.TypeComparator<T>

setReference

public void setReference(T toCompare)

Specified by:

setReference in class org.apache.flink.api.common.typeutils.TypeComparator<T>

equalToReference

public boolean equalToReference(T candidate)

Specified by:

equalToReference in class org.apache.flink.api.common.typeutils.TypeComparator<T>

compareToReference

public int compareToReference(org.apache.flink.api.common.typeutils.TypeComparator<T> referencedComparator)

Specified by:

compareToReference in class org.apache.flink.api.common.typeutils.TypeComparator<T>

compare

public int compare(T first,
                   T second)

Specified by:

compare in class org.apache.flink.api.common.typeutils.TypeComparator<T>

compareSerialized

public int compareSerialized(org.apache.flink.core.memory.DataInputView firstSource,
                             org.apache.flink.core.memory.DataInputView secondSource)
                      throws IOException

Specified by:

compareSerialized in class org.apache.flink.api.common.typeutils.TypeComparator<T>

Throws:

IOException

supportsNormalizedKey

public boolean supportsNormalizedKey()

Specified by:

supportsNormalizedKey in class org.apache.flink.api.common.typeutils.TypeComparator<T>

getNormalizeKeyLen

public int getNormalizeKeyLen()

Specified by:

getNormalizeKeyLen in class org.apache.flink.api.common.typeutils.TypeComparator<T>

isNormalizedKeyPrefixOnly

public boolean isNormalizedKeyPrefixOnly(int keyBytes)

Specified by:

isNormalizedKeyPrefixOnly in class org.apache.flink.api.common.typeutils.TypeComparator<T>

putNormalizedKey

public void putNormalizedKey(T value,
                             org.apache.flink.core.memory.MemorySegment target,
                             int offset,
                             int numBytes)

Specified by:

putNormalizedKey in class org.apache.flink.api.common.typeutils.TypeComparator<T>

invertNormalizedKey

public boolean invertNormalizedKey()

Specified by:

invertNormalizedKey in class org.apache.flink.api.common.typeutils.TypeComparator<T>

supportsSerializationWithKeyNormalization

public boolean supportsSerializationWithKeyNormalization()

Specified by:

supportsSerializationWithKeyNormalization in class org.apache.flink.api.common.typeutils.TypeComparator<T>

writeWithKeyNormalization

public void writeWithKeyNormalization(T record,
                                      org.apache.flink.core.memory.DataOutputView target)
                               throws IOException

Specified by:

writeWithKeyNormalization in class org.apache.flink.api.common.typeutils.TypeComparator<T>

Throws:

IOException

readWithKeyDenormalization

public T readWithKeyDenormalization(T reuse,
                                    org.apache.flink.core.memory.DataInputView source)
                             throws IOException

Specified by:

readWithKeyDenormalization in class org.apache.flink.api.common.typeutils.TypeComparator<T>

Throws:

IOException

duplicate

public PojoComparator<T> duplicate()

Specified by:

duplicate in class org.apache.flink.api.common.typeutils.TypeComparator<T>

extractKeys

public int extractKeys(Object record,
                       Object[] target,
                       int index)

Specified by:

extractKeys in class org.apache.flink.api.common.typeutils.TypeComparator<T>