com.datatorrent.lib.streamquery.condition.BetweenCondition Maven / Gradle / Ivy
/**
* 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 com.datatorrent.lib.streamquery.condition;
import java.util.Map;
import javax.validation.constraints.NotNull;
/**
* A derivation of Condition that validates row by checking if the given column name value lies between given left,right range.
*
* Properties :
* column : Name of column.
* leftValue : left range of column value.
* rightValue : right range od column value.
*
* @displayName Between Condition
* @category Stream Manipulators
* @tags sql condition
* @since 0.3.4
*/
public class BetweenCondition extends Condition
{
/**
* Column name to be checked.
*/
@NotNull
private String column;
/**
* Left range value.
*/
@NotNull
private Object leftValue;
/**
* Right range value.
*/
@NotNull
private Object rightValue;
/**
* @param column Name of column, must be non null.
* @param leftValue Left range for value, mut be non null.
* @param rightValue right range for value, mut be non null.
*/
public BetweenCondition(@NotNull String column, @NotNull Object leftValue, @NotNull Object rightValue)
{
this.column = column;
this.leftValue = leftValue;
this.rightValue = rightValue;
}
/**
* Validate given row.
*/
@SuppressWarnings({"rawtypes", "unchecked"})
@Override
public boolean isValidRow(@NotNull Map row)
{
if (!row.containsKey(column)) {
return false;
}
Object value = row.get(column);
if (value == null) {
return false;
}
if (((Comparable)value).compareTo((Comparable)leftValue) < 0) {
return false;
}
if (((Comparable)value).compareTo((Comparable)rightValue) > 0) {
return false;
}
return true;
}
/**
* Must not be called.
*/
@Override
public boolean isValidJoin(@NotNull Map row1, Map row2)
{
assert (false);
return false;
}
}