OperatorAndValue.java
/*******************************************************************************
* Copyright (c) 2018 @gt_tech
*
* 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 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.bitbucket.gt_tech.spring.data.querydsl.value.operators;
import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.Validate;
import org.apache.commons.lang3.builder.ToStringBuilder;
import java.util.Collection;
/**
* Utility class that extracts Operator and Value using the list of supplied
* {@link Operator}
*/
public class OperatorAndValue {
private Operator operator;
private String value;
/**
* Constructor
* <p>
* Leans towards selecting picking case-insensitive Operation.
*
* @param input Input String (search parameter's, usually an attribute, value)
* @param in_operators Input list of operators to be used to check for operator
* @param defaultOperator Default Operator if the supplied input string doesn't have any
* operator
*/
public OperatorAndValue(final String input, final Collection<Operator> in_operators,
final Operator defaultOperator) {
Validate.isTrue(StringUtils.isNotBlank(input), "Input string cannot be blank");
Validate.isTrue(CollectionUtils.isNotEmpty(in_operators), "Input operators must not be empty");
this.operator = null;
this.value = StringUtils.trim(input);
for (final Operator op : in_operators) {
if (ExpressionProvider.isOperator(op, input)) {
this.operator = op;
this.value = StringUtils.substringBeforeLast(
StringUtils.substringAfter(input,
op.toString() + ExpressionProvider.OPERATOR_VALUE_DELIMITER_PREFIX),
ExpressionProvider.OPERATOR_VALUE_DELIMITER_SUFFIX);
break;
}
}
if (this.operator == null) {
this.operator = defaultOperator;
}
}
/**
* @return Operator extracted from supplied value or else provided default operator
*/
public Operator getOperator() {
return operator;
}
/**
* @return the String value from supplied value after stripping first operator if it was an operator wrapped value
*/
public String getValue() {
return value;
}
@Override
public String toString() {
return new ToStringBuilder(this).append("operator", operator)
.append("value", value)
.toString();
}
}