org.apache.flink.table.operations

Class DataSetQueryOperation<E>

java.lang.Object

org.apache.flink.table.operations.DataSetQueryOperation<E>

All Implemented Interfaces:

org.apache.flink.table.operations.Operation, org.apache.flink.table.operations.QueryOperation

@Internal
public class DataSetQueryOperation<E>
extends Object
implements org.apache.flink.table.operations.QueryOperation

Describes a relational operation that reads from a DataSet.

This operation may expose only part, or change the order of the fields available in a CompositeType of the underlying DataSet. The getFieldIndices() describes the mapping between fields of the TableSchema to the CompositeType.

Constructor Summary

Constructors

Constructor and Description
DataSetQueryOperation(org.apache.flink.api.java.DataSet<E> dataSet, int[] fieldIndices, org.apache.flink.table.catalog.ResolvedSchema resolvedSchema)

Method Summary

Modifier and Type	Method and Description
<T> T	accept(org.apache.flink.table.operations.QueryOperationVisitor<T> visitor)
String	asSummaryString()
List<org.apache.flink.table.operations.QueryOperation>	getChildren()
org.apache.flink.api.java.DataSet<E>	getDataSet()
int[]	getFieldIndices()
org.apache.flink.table.catalog.ResolvedSchema	getResolvedSchema()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.operations.QueryOperation

asSerializableString

Constructor Detail

DataSetQueryOperation

public DataSetQueryOperation(org.apache.flink.api.java.DataSet<E> dataSet,
                             int[] fieldIndices,
                             org.apache.flink.table.catalog.ResolvedSchema resolvedSchema)

Method Detail

getDataSet

public org.apache.flink.api.java.DataSet<E> getDataSet()

getFieldIndices

public int[] getFieldIndices()

getResolvedSchema

public org.apache.flink.table.catalog.ResolvedSchema getResolvedSchema()

Specified by:

getResolvedSchema in interface org.apache.flink.table.operations.QueryOperation

asSummaryString

public String asSummaryString()

Specified by:

asSummaryString in interface org.apache.flink.table.operations.Operation

getChildren

public List<org.apache.flink.table.operations.QueryOperation> getChildren()

Specified by:

getChildren in interface org.apache.flink.table.operations.QueryOperation

accept

public <T> T accept(org.apache.flink.table.operations.QueryOperationVisitor<T> visitor)

Specified by:

accept in interface org.apache.flink.table.operations.QueryOperation