| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.hyracks.api.constraints.expressions; |
| |
| import java.util.Collection; |
| |
| import edu.uci.ics.hyracks.api.dataflow.OperatorDescriptorId; |
| |
| public final class PartitionCountExpression extends LValueConstraintExpression { |
| private static final long serialVersionUID = 1L; |
| |
| private final OperatorDescriptorId opId; |
| |
| public PartitionCountExpression(OperatorDescriptorId opId) { |
| this.opId = opId; |
| } |
| |
| @Override |
| public ExpressionTag getTag() { |
| return ExpressionTag.PARTITION_COUNT; |
| } |
| |
| public OperatorDescriptorId getOperatorDescriptorId() { |
| return opId; |
| } |
| |
| @Override |
| public void getChildren(Collection<ConstraintExpression> children) { |
| } |
| |
| @Override |
| protected void toString(StringBuilder buffer) { |
| buffer.append(getTag()).append('(').append(opId.toString()).append(')'); |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = 1; |
| result = prime * result + ((opId == null) ? 0 : opId.hashCode()); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| PartitionCountExpression other = (PartitionCountExpression) obj; |
| if (opId == null) { |
| if (other.opId != null) |
| return false; |
| } else if (!opId.equals(other.opId)) |
| return false; |
| return true; |
| } |
| } |