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:

  • 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 Details

    • JsonRowDeserializationSchema

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

    • JsonRowDeserializationSchema

      public JsonRowDeserializationSchema(String jsonSchema)

  • Method Details

    • 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