Examples with WindowJoinOperator org.apache.flink.table.runtime.operators.join.window.WindowJoinOperator used on opensource projects

Example 1 with WindowJoinOperator

use of org.apache.flink.table.runtime.operators.join.window.WindowJoinOperator in project flink by apache.

the class StreamExecWindowJoin method translateToPlanInternal.

@Override
@SuppressWarnings("unchecked")
protected Transformation<RowData> translateToPlanInternal(PlannerBase planner, ExecNodeConfig config) {
    int leftWindowEndIndex = ((WindowAttachedWindowingStrategy) leftWindowing).getWindowEnd();
    int rightWindowEndIndex = ((WindowAttachedWindowingStrategy) rightWindowing).getWindowEnd();
    final ExecEdge leftInputEdge = getInputEdges().get(0);
    final ExecEdge rightInputEdge = getInputEdges().get(1);
    final Transformation<RowData> leftTransform = (Transformation<RowData>) leftInputEdge.translateToPlan(planner);
    final Transformation<RowData> rightTransform = (Transformation<RowData>) rightInputEdge.translateToPlan(planner);
    final RowType leftType = (RowType) leftInputEdge.getOutputType();
    final RowType rightType = (RowType) rightInputEdge.getOutputType();
    JoinUtil.validateJoinSpec(joinSpec, leftType, rightType, true);
    final int[] leftJoinKey = joinSpec.getLeftKeys();
    final int[] rightJoinKey = joinSpec.getRightKeys();
    final InternalTypeInfo<RowData> leftTypeInfo = InternalTypeInfo.of(leftType);
    final InternalTypeInfo<RowData> rightTypeInfo = InternalTypeInfo.of(rightType);
    GeneratedJoinCondition generatedCondition = JoinUtil.generateConditionFunction(config.getTableConfig(), joinSpec, leftType, rightType);
    ZoneId shiftTimeZone = TimeWindowUtil.getShiftTimeZone(leftWindowing.getTimeAttributeType(), config.getLocalTimeZone());
    WindowJoinOperator operator = WindowJoinOperatorBuilder.builder().leftSerializer(leftTypeInfo.toRowSerializer()).rightSerializer(rightTypeInfo.toRowSerializer()).generatedJoinCondition(generatedCondition).leftWindowEndIndex(leftWindowEndIndex).rightWindowEndIndex(rightWindowEndIndex).filterNullKeys(joinSpec.getFilterNulls()).joinType(joinSpec.getJoinType()).withShiftTimezone(shiftTimeZone).build();
    final RowType returnType = (RowType) getOutputType();
    final TwoInputTransformation<RowData, RowData, RowData> transform = ExecNodeUtil.createTwoInputTransformation(leftTransform, rightTransform, createTransformationMeta(WINDOW_JOIN_TRANSFORMATION, config), operator, InternalTypeInfo.of(returnType), leftTransform.getParallelism());
    // set KeyType and Selector for state
    RowDataKeySelector leftSelect = KeySelectorUtil.getRowDataSelector(leftJoinKey, leftTypeInfo);
    RowDataKeySelector rightSelect = KeySelectorUtil.getRowDataSelector(rightJoinKey, rightTypeInfo);
    transform.setStateKeySelectors(leftSelect, rightSelect);
    transform.setStateKeyType(leftSelect.getProducedType());
    return transform;
}