org.fl.modules.test.excel.PredicateChainExample.java Source code

Introduction

Here is the source code for org.fl.modules.test.excel.PredicateChainExample.java

Source

/*
 * Copyright (C) 2013 Open Source Project
 * 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.
 */
/**
 * # * PredicateChainExample.java Create on 2013-11-13 ?11:43:15
 * # * project qy-modules-excel
 * # * Copyright 2013 by .
 * #
 */
/**
 * ??PredicateChainExample.java
 * ?
 * 2013-11-13
 * Copyright  Corporation 2013
 * ?
 */
package org.fl.modules.test.excel;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.collections.Predicate;
import org.apache.commons.collections.PredicateUtils;
import org.fl.modules.excel.rule.ImportValidatePredicate;
import org.fl.modules.excel.rule.ImportValidateRule;
import org.fl.modules.excel.rule.Rule;

/**
 * @author David.Yang
 * @version 1.0
 *          CreateDate2013-11-13 ?11:43:15
 *          
 */
/**
 * ??qy-modules-excel
 * ??PredicateChainExample
 * ??
 * David.Yang
 * 2013-11-13 ?11:43:15
 * David.Yang
 * 2013-11-13 ?11:43:15
 * 
 * 
 * @version
 */
public class PredicateChainExample {
    public static void main(String[] args) {
        PredicateChainExample chainExample = new PredicateChainExample();
        chainExample.setUpData();
        chainExample.filterDataUsingMultipleCriteria();
    }

    List<ImportValidateRule> personList = new ArrayList<ImportValidateRule>();

    /**
     * Here we are adding multiple predicate
     * filters the collection so that final person object will contain
     * firstName as "ganesh" & lastName as "gowtham"
     */
    void filterDataUsingMultipleCriteria() {
        // ImportValidateRule importValidateRule = new ImportValidateRule();
        // importValidateRule.setAlias("?");
        // importValidateRule.setIndex(0);
        // importValidateRule.setRule(Rule.emptyOrNull);
        ImportValidatePredicate firstNameEqlPredicate = new ImportValidatePredicate();
        // firstNameEqlPredicate.setImportValidateRule(importValidateRule);
        Predicate[] allPredicateArray = { firstNameEqlPredicate };
        Predicate allPredicate = PredicateUtils.allPredicate(allPredicateArray);
        Collection<ImportValidateRule> filteredSuccessCollection = CollectionUtils.select(personList, allPredicate);
        Collection<ImportValidateRule> filteredCollection = CollectionUtils.selectRejected(personList,
                allPredicate);
        // CollectionUtils.filter(personList, firstNameEqlPredicate);
        // for (ImportValidateRule person : personList) {
        // System.out.println(person.toString());
        // }
    }

    /**
     * Basic method which creates the list of person object's
     */
    void setUpData() {
        ImportValidateRule importValidateRule = new ImportValidateRule();
        importValidateRule.setAlias("?");
        importValidateRule.setIndex(0);
        importValidateRule.setRule(Rule.emptyOrNull);
        importValidateRule.setValue("");
        personList.add(importValidateRule);
        importValidateRule = new ImportValidateRule();
        importValidateRule.setAlias("?");
        importValidateRule.setIndex(2);
        importValidateRule.setRule(Rule.emptyOrNull);
        importValidateRule.setValue("2001");
        personList.add(importValidateRule);
    }
}