org.shadowmask.core.discovery.rules.DateRule.java Source code

Introduction

Here is the source code for org.shadowmask.core.discovery.rules.DateRule.java

Source

/**
 * 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
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * 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.shadowmask.core.discovery.rules;

import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;
import org.shadowmask.core.discovery.DataDiscoveryException;
import org.shadowmask.core.discovery.RuleContext;
import org.shadowmask.core.type.DateFormatPattern;

/**
 * This rule would evaluate whether the column value is a date.
 */
public class DateRule extends QusiIdentifierRule {
    public DateRule(RuleContext ruleContext) {
        super(ruleContext);
    }

    @Override
    public boolean evaluate() {
        if (value == null) {
            throw new DataDiscoveryException("Should fill the column value before fire inspect rules.");
        }
        DateTimeFormatter format;
        DateTime dateTime;
        for (String pattern : DateFormatPattern.patterns) {
            format = DateTimeFormat.forPattern(pattern);
            try {
                dateTime = DateTime.parse(value, format);
            } catch (Exception e) {
                continue;
            }
            if (dateTime != null) {
                return true;
            }
        }
        return false;
    }
}