stirling.fix.messages.UtcTimestampField.java Source code

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Here is the source code for stirling.fix.messages.UtcTimestampField.java

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/*
 * Copyright 2008 the original author or authors.
 *
 * 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 stirling.fix.messages;

import static org.joda.time.DateTimeZone.UTC;

import org.joda.time.DateTime;
import org.joda.time.format.DateTimeFormat;
import org.joda.time.format.DateTimeFormatter;

/**
 * @author Pekka Enberg 
 */
public class UtcTimestampField extends AbstractField<DateTime> {
    private static final String FORMAT_WITHOUT_MSEC = "yyyyMMdd-HH:mm:ss";
    private static final String FORMAT_WITH_MSEC = "yyyyMMdd-HH:mm:ss.SSS";

    private String format = FORMAT_WITHOUT_MSEC;

    public UtcTimestampField(Tag<UtcTimestampField> tag) {
        this(tag, Required.YES);
    }

    public UtcTimestampField(Tag<UtcTimestampField> tag, DateTime dateTime) {
        super(tag, dateTime, Required.YES);
    }

    public UtcTimestampField(Tag<UtcTimestampField> tag, Required required) {
        super(tag, null, required);
    }

    @Override
    public void parse(String value) {
        if (value.length() == FORMAT_WITH_MSEC.length())
            format = FORMAT_WITH_MSEC;
        else
            format = FORMAT_WITHOUT_MSEC;
        DateTimeFormatter fmt = getFormat();
        try {
            this.value = fmt.withZone(UTC).parseDateTime(value);
        } catch (Exception e) {
            validFormat = false;
        }
    }

    public DateTime dateValue() {
        return value;
    }

    @Override
    protected String value() {
        if (!hasValue()) {
            return null;
        }
        DateTimeFormatter fmt = getFormat();
        return fmt.withZone(UTC).print(value);
    }

    private DateTimeFormatter getFormat() {
        return DateTimeFormat.forPattern(format);
    }
}