| /* |
| * 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.asterix.lang.common.expression; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import org.apache.asterix.common.exceptions.CompilationException; |
| import org.apache.asterix.lang.common.base.AbstractExpression; |
| import org.apache.asterix.lang.common.base.Expression; |
| import org.apache.asterix.lang.common.struct.OperatorType; |
| import org.apache.asterix.lang.common.visitor.base.ILangVisitor; |
| |
| public class OperatorExpr extends AbstractExpression { |
| private List<Expression> exprList; |
| private List<OperatorType> opList; |
| private boolean currentop; |
| |
| public OperatorExpr() { |
| super(); |
| exprList = new ArrayList<>(); |
| opList = new ArrayList<>(); |
| } |
| |
| public OperatorExpr(List<Expression> exprList, List<OperatorType> opList, boolean currentop) { |
| this.exprList = exprList; |
| this.opList = opList; |
| this.currentop = currentop; |
| } |
| |
| public boolean isCurrentop() { |
| return currentop; |
| } |
| |
| public void setCurrentop(boolean currentop) { |
| this.currentop = currentop; |
| } |
| |
| public List<Expression> getExprList() { |
| return exprList; |
| } |
| |
| public List<OperatorType> getOpList() { |
| return opList; |
| } |
| |
| public void setExprList(List<Expression> exprList) { |
| this.exprList = exprList; |
| } |
| |
| public void addOperand(Expression operand) { |
| exprList.add(operand); |
| } |
| |
| public static boolean opIsComparison(OperatorType t) { |
| switch (t) { |
| case EQ: |
| case NEQ: |
| case GT: |
| case GE: |
| case LT: |
| case LE: |
| case DISTINCT: |
| case NOT_DISTINCT: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| public void addOperator(String strOp) throws CompilationException { |
| OperatorType op = OperatorType.fromSymbol(strOp); |
| if (op == null) { |
| throw new CompilationException("Unsupported operator: " + strOp); |
| } |
| addOperator(op); |
| } |
| |
| public void addOperator(OperatorType op) { |
| if (op == null) { |
| throw new NullPointerException(); |
| } |
| opList.add(op); |
| } |
| |
| @Override |
| public Kind getKind() { |
| return Kind.OP_EXPRESSION; |
| } |
| |
| @Override |
| public <R, T> R accept(ILangVisitor<R, T> visitor, T arg) throws CompilationException { |
| return visitor.visit(this, arg); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(currentop, exprList, opList); |
| } |
| |
| @Override |
| public boolean equals(Object object) { |
| if (this == object) { |
| return true; |
| } |
| if (!(object instanceof OperatorExpr)) { |
| return false; |
| } |
| OperatorExpr target = (OperatorExpr) object; |
| return currentop == target.isCurrentop() && Objects.equals(exprList, target.exprList) |
| && Objects.equals(opList, target.opList); |
| } |
| } |