org.apache.hawq.pxf.service

Class MetadataResponse

java.lang.Object

org.apache.hawq.pxf.service.MetadataResponse

All Implemented Interfaces:

javax.ws.rs.core.StreamingOutput

public class MetadataResponse
extends java.lang.Object
implements javax.ws.rs.core.StreamingOutput

Class for serializing metadata in JSON format. The class implements StreamingOutput so the serialization will be done in a stream and not in one bulk, this in order to avoid running out of memory when processing a lot of items.

Constructor Summary

Constructors

Constructor and Description
MetadataResponse(java.util.List<Metadata> metadataList) Constructs metadata response out of a metadata list

Method Summary

Modifier and Type	Method and Description
void	write(java.io.OutputStream output) Serializes the metadata list in JSON, To be used as the result string for HAWQ.

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataResponse

public MetadataResponse(java.util.List<Metadata> metadataList)

Constructs metadata response out of a metadata list

Parameters:

metadataList - metadata list

Method Detail

write

public void write(java.io.OutputStream output)
           throws java.io.IOException,
                  javax.ws.rs.WebApplicationException

Serializes the metadata list in JSON, To be used as the result string for HAWQ.

Specified by:

write in interface javax.ws.rs.core.StreamingOutput

Throws:

java.io.IOException

javax.ws.rs.WebApplicationException