Package org.apache.flink.formats.json

Class JsonRowDeserializationSchema

java.lang.Object

org.apache.flink.formats.json.JsonRowDeserializationSchema

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.types.Row>

@Internal
public class JsonRowDeserializationSchema
extends Object
implements org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row>

Deserialization schema from JSON to Flink types.

Deserializes a byte[] message as a JSON object and reads the specified fields.

Failures during deserialization are forwarded as wrapped IOExceptions.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	JsonRowDeserializationSchema.Builder	Builder for JsonRowDeserializationSchema.

Nested classes/interfaces inherited from interface org.apache.flink.api.common.serialization.DeserializationSchema

org.apache.flink.api.common.serialization.DeserializationSchema.InitializationContext

Constructor Summary

Constructors

Constructor	Description
JsonRowDeserializationSchema(String jsonSchema)
JsonRowDeserializationSchema(org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row> typeInfo)

Method Summary

Modifier and Type	Method	Description
org.apache.flink.types.Row	deserialize(byte[] message)
boolean	equals(Object o)
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row>	getProducedType()
int	hashCode()
boolean	isEndOfStream(org.apache.flink.types.Row nextElement)
void	open(org.apache.flink.api.common.serialization.DeserializationSchema.InitializationContext context)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.serialization.DeserializationSchema

deserialize

Constructor Detail

JsonRowDeserializationSchema

public JsonRowDeserializationSchema(org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row> typeInfo)

JsonRowDeserializationSchema

public JsonRowDeserializationSchema(String jsonSchema)

Method Detail

open

public void open(org.apache.flink.api.common.serialization.DeserializationSchema.InitializationContext context)
          throws Exception

Specified by:

open in interface org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row>

Throws:

Exception

deserialize

public org.apache.flink.types.Row deserialize(byte[] message)
                                       throws IOException

Specified by:

deserialize in interface org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row>

Throws:

IOException

isEndOfStream

public boolean isEndOfStream(org.apache.flink.types.Row nextElement)

Specified by:

isEndOfStream in interface org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row>

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row> getProducedType()

Specified by:

getProducedType in interface org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.types.Row>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object