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/*
 *      Copyright (C) 2012-2015 DataStax Inc.
 *
 *   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 com.datastax.driver.extras.codecs.date;

import com.datastax.driver.core.DataType;
import com.datastax.driver.core.ProtocolVersion;
import com.datastax.driver.core.TypeCodec;
import com.datastax.driver.core.exceptions.InvalidTypeException;

import java.nio.ByteBuffer;
import java.text.ParseException;

import static com.datastax.driver.core.ParseUtils.*;
import static java.lang.Long.parseLong;

/**
 * A {@link TypeCodec} that maps CQL timestamps to Java primitive longs,
 * representing the number of milliseconds since the Epoch.
 * 

* This codec can serve as a replacement for the driver's built-in * {@link TypeCodec#timestamp() timestamp} codec, * when application code prefers to deal with raw milliseconds than with * {@link java.util.Date} instances. */ public class SimpleTimestampCodec extends TypeCodec.PrimitiveLongCodec { public static final SimpleTimestampCodec instance = new SimpleTimestampCodec(); public SimpleTimestampCodec() { super(DataType.timestamp()); } @Override public ByteBuffer serializeNoBoxing(long value, ProtocolVersion protocolVersion) { ByteBuffer bb = ByteBuffer.allocate(8); bb.putLong(0, value); return bb; } @Override public long deserializeNoBoxing(ByteBuffer bytes, ProtocolVersion protocolVersion) { if (bytes == null || bytes.remaining() == 0) return 0; if (bytes.remaining() != 8) throw new InvalidTypeException("Invalid 64-bits long value, expecting 8 bytes but got " + bytes.remaining()); return bytes.getLong(bytes.position()); } @Override public Long parse(String value) { if (value == null || value.isEmpty() || value.equalsIgnoreCase("NULL")) return null; // single quotes are optional for long literals, mandatory for date patterns // strip enclosing single quotes, if any if (isQuoted(value)) value = unquote(value); if (isLongLiteral(value)) { try { return parseLong(value); } catch (NumberFormatException e) { throw new InvalidTypeException(String.format("Cannot parse timestamp value from \"%s\"", value), e); } } try { return parseDate(value).getTime(); } catch (ParseException e) { throw new InvalidTypeException(String.format("Cannot parse timestamp value from \"%s\"", value), e); } } @Override public String format(Long value) { if (value == null) return "NULL"; return quote(Long.toString(value)); } }





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