| /* |
| * 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.iotdb.db.queryengine.plan.expression.unary; |
| |
| import org.apache.iotdb.db.queryengine.plan.expression.Expression; |
| import org.apache.iotdb.db.queryengine.plan.expression.ExpressionType; |
| import org.apache.iotdb.db.queryengine.plan.expression.leaf.ConstantOperand; |
| import org.apache.iotdb.db.queryengine.plan.expression.leaf.LeafOperand; |
| import org.apache.iotdb.db.queryengine.plan.expression.leaf.TimeSeriesOperand; |
| import org.apache.iotdb.db.queryengine.plan.expression.multi.FunctionExpression; |
| import org.apache.iotdb.db.queryengine.plan.expression.visitor.ExpressionVisitor; |
| |
| import org.apache.tsfile.utils.ReadWriteIOUtils; |
| |
| import javax.validation.constraints.NotNull; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.Iterator; |
| import java.util.LinkedHashSet; |
| |
| public class InExpression extends UnaryExpression { |
| |
| private final boolean isNotIn; |
| private final LinkedHashSet<String> values; |
| |
| public InExpression(Expression expression, boolean isNotIn, LinkedHashSet<String> values) { |
| super(expression); |
| this.isNotIn = isNotIn; |
| this.values = values; |
| } |
| |
| public InExpression(ByteBuffer byteBuffer) { |
| super(Expression.deserialize(byteBuffer)); |
| isNotIn = ReadWriteIOUtils.readBool(byteBuffer); |
| final int size = ReadWriteIOUtils.readInt(byteBuffer); |
| values = new LinkedHashSet<>(); |
| for (int i = 0; i < size; ++i) { |
| values.add(ReadWriteIOUtils.readString(byteBuffer)); |
| } |
| } |
| |
| public boolean isNotIn() { |
| return isNotIn; |
| } |
| |
| public LinkedHashSet<String> getValues() { |
| return values; |
| } |
| |
| @Override |
| protected String getExpressionStringInternal() { |
| String operator = isNotIn ? " NOT IN (" : " IN ("; |
| StringBuilder stringBuilder = new StringBuilder(); |
| if (expression instanceof FunctionExpression || expression instanceof LeafOperand) { |
| stringBuilder.append(expression.getExpressionString()).append(operator); |
| } else { |
| stringBuilder |
| .append('(') |
| .append(expression.getExpressionString()) |
| .append(')') |
| .append(operator); |
| } |
| return appendValuesToBuild(stringBuilder).toString(); |
| } |
| |
| @NotNull |
| private StringBuilder appendValuesToBuild(StringBuilder stringBuilder) { |
| Iterator<String> iterator = values.iterator(); |
| if (iterator.hasNext()) { |
| stringBuilder.append(iterator.next()); |
| } |
| while (iterator.hasNext()) { |
| stringBuilder.append(',').append(iterator.next()); |
| } |
| stringBuilder.append(')'); |
| return stringBuilder; |
| } |
| |
| @Override |
| public ExpressionType getExpressionType() { |
| return ExpressionType.IN; |
| } |
| |
| @Override |
| protected void serialize(ByteBuffer byteBuffer) { |
| super.serialize(byteBuffer); |
| ReadWriteIOUtils.write(isNotIn, byteBuffer); |
| ReadWriteIOUtils.write(values.size(), byteBuffer); |
| for (String value : values) { |
| ReadWriteIOUtils.write(value, byteBuffer); |
| } |
| } |
| |
| @Override |
| protected void serialize(DataOutputStream stream) throws IOException { |
| super.serialize(stream); |
| ReadWriteIOUtils.write(isNotIn, stream); |
| ReadWriteIOUtils.write(values.size(), stream); |
| for (String value : values) { |
| ReadWriteIOUtils.write(value, stream); |
| } |
| } |
| |
| @Override |
| public String getOutputSymbolInternal() { |
| String operator = isNotIn ? " NOT IN (" : " IN ("; |
| StringBuilder stringBuilder = new StringBuilder(); |
| if (expression instanceof FunctionExpression |
| || expression instanceof ConstantOperand |
| || expression instanceof TimeSeriesOperand) { |
| stringBuilder.append(expression.getOutputSymbol()).append(operator); |
| } else { |
| stringBuilder.append('(').append(expression.getOutputSymbol()).append(')').append(operator); |
| } |
| return appendValuesToBuild(stringBuilder).toString(); |
| } |
| |
| @Override |
| public <R, C> R accept(ExpressionVisitor<R, C> visitor, C context) { |
| return visitor.visitInExpression(this, context); |
| } |
| } |