org.apache.flink.table.runtime.typeutils.serializers.python

类 StringSerializer

java.lang.Object

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

org.apache.flink.api.common.typeutils.base.TypeSerializerSingleton<String>

org.apache.flink.table.runtime.typeutils.serializers.python.StringSerializer

所有已实现的接口:

Serializable

@Internal
public class StringSerializer
extends org.apache.flink.api.common.typeutils.base.TypeSerializerSingleton<String>

We create the StringSerializer instead of using the StringSerializer of flink-core module because the StringSerializer of flink-core module serialize every Char of String in serialize method and deserialize the Char to build the String. We want to convert String to UTF-8 bytes to serialize which is compatible with BinaryStringSerializer.

So we create this StringSerializer (only used in Java and Python data communication in udf).

StringSerializer for String.

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	StringSerializer.StringSerializerSnapshot Serializer configuration snapshot for compatibility and format evolution.

字段概要

字段

限定符和类型	字段和说明
static StringSerializer	INSTANCE

构造器概要

构造器

构造器和说明
StringSerializer()

方法概要

限定符和类型	方法和说明
void	copy(org.apache.flink.core.memory.DataInputView source, org.apache.flink.core.memory.DataOutputView target)
String	copy(String from)
String	copy(String from, String reuse)
String	createInstance()
String	deserialize(org.apache.flink.core.memory.DataInputView source)
String	deserialize(String reuse, org.apache.flink.core.memory.DataInputView source)
int	getLength()
boolean	isImmutableType()
void	serialize(String record, org.apache.flink.core.memory.DataOutputView target)
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<String>	snapshotConfiguration()

从类继承的方法 org.apache.flink.api.common.typeutils.base.TypeSerializerSingleton

duplicate, equals, hashCode

从类继承的方法 java.lang.Object

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

字段详细资料

INSTANCE

public static final StringSerializer INSTANCE

构造器详细资料

StringSerializer

public StringSerializer()

方法详细资料

isImmutableType

public boolean isImmutableType()

指定者:

isImmutableType 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

createInstance

public String createInstance()

指定者:

createInstance 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

copy

public String copy(String from)

指定者:

copy 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

copy

public String copy(String from,
                   String reuse)

指定者:

copy 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

getLength

public int getLength()

指定者:

getLength 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

serialize

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

指定者:

serialize 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

抛出:

IOException

deserialize

public String deserialize(org.apache.flink.core.memory.DataInputView source)
                   throws IOException

指定者:

deserialize 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

抛出:

IOException

deserialize

public String deserialize(String reuse,
                          org.apache.flink.core.memory.DataInputView source)
                   throws IOException

指定者:

deserialize 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

抛出:

IOException

copy

public void copy(org.apache.flink.core.memory.DataInputView source,
                 org.apache.flink.core.memory.DataOutputView target)
          throws IOException

指定者:

copy 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>

抛出:

IOException

snapshotConfiguration

public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<String> snapshotConfiguration()

指定者:

snapshotConfiguration 在类中 org.apache.flink.api.common.typeutils.TypeSerializer<String>