| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.hyracks.algebricks.core.algebra.operators.logical; |
| |
| import java.util.ArrayList; |
| |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalOperatorTag; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalVariable; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.IVariableTypeEnvironment; |
| import org.apache.hyracks.algebricks.core.algebra.properties.VariablePropagationPolicy; |
| import org.apache.hyracks.algebricks.core.algebra.typing.ITypingContext; |
| import org.apache.hyracks.algebricks.core.algebra.visitors.ILogicalExpressionReferenceTransform; |
| import org.apache.hyracks.algebricks.core.algebra.visitors.ILogicalOperatorVisitor; |
| import org.apache.hyracks.api.dataflow.value.IRangeMap; |
| import org.apache.hyracks.dataflow.std.base.RangeId; |
| |
| public class RangeForwardOperator extends AbstractLogicalOperator { |
| |
| private RangeId rangeId; |
| private IRangeMap rangeMap; |
| |
| public RangeForwardOperator(RangeId rangeId, IRangeMap rangeMap) { |
| this.rangeId = rangeId; |
| this.rangeMap = rangeMap; |
| } |
| |
| public RangeId getRangeId() { |
| return rangeId; |
| } |
| |
| public IRangeMap getRangeMap() { |
| return rangeMap; |
| } |
| |
| @Override |
| public LogicalOperatorTag getOperatorTag() { |
| return LogicalOperatorTag.RANGE_FORWARD; |
| } |
| |
| @Override |
| public VariablePropagationPolicy getVariablePropagationPolicy() { |
| return VariablePropagationPolicy.ALL; |
| } |
| |
| @Override |
| public boolean acceptExpressionTransform(ILogicalExpressionReferenceTransform visitor) throws AlgebricksException { |
| return false; |
| } |
| |
| @Override |
| public <R, T> R accept(ILogicalOperatorVisitor<R, T> visitor, T arg) throws AlgebricksException { |
| return visitor.visitRangeForwardOperator(this, arg); |
| } |
| |
| @Override |
| public IVariableTypeEnvironment computeOutputTypeEnvironment(ITypingContext ctx) throws AlgebricksException { |
| return createPropagatingAllInputsTypeEnvironment(ctx); |
| } |
| |
| @Override |
| public boolean isMap() { |
| return false; |
| } |
| |
| @Override |
| public void recomputeSchema() throws AlgebricksException { |
| schema = new ArrayList<LogicalVariable>(inputs.get(0).getValue().getSchema()); |
| } |
| |
| } |