modify Metadata.class for geometry type

[joungjo]

/**

• 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

•  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.google.code.or.common.glossary;

import java.io.IOException;
import java.io.Serializable;
import java.util.Arrays;

import com.google.code.or.common.util.CodecUtils;
import com.google.code.or.common.util.MySQLConstants;
import com.google.code.or.common.util.ToStringBuilder;
import com.google.code.or.io.util.XDeserializer;

/**
*

• @author Jingqi Xu
  */
  public final class Metadata implements Serializable {
  //
  private static final long serialVersionUID = 4634414541769527837L;

  //
  private final byte[] type;
  private final int[] metadata;

  /**
  *
  */
  public Metadata(byte[] type, int[] metadata) {
  this.type = type;
  this.metadata = metadata;
  }

  /**
  *
  */
  @OverRide
  public String toString() {
  return new ToStringBuilder(this)
  .append("metadata", Arrays.toString(metadata)).toString();
  }

  /**
  *
  */
  public byte getType(int column) {
  return this.type[column];
  }

  public int getMetadata(int column) {
  return this.metadata[column];
  }

  /**
  *
  */
  public static final Metadata valueOf(byte[] type, byte[] data)
  throws IOException {
  final int[] metadata = new int[type.length];
  final XDeserializer d = new XDeserializer(data);
  for(int i = 0; i < type.length; i++) {
  final int t = CodecUtils.toUnsigned(type[i]);
  switch(t) {
  case MySQLConstants.TYPE_FLOAT:
  case MySQLConstants.TYPE_DOUBLE:
  case MySQLConstants.TYPE_TINY_BLOB:
  case MySQLConstants.TYPE_BLOB:
  case MySQLConstants.TYPE_MEDIUM_BLOB:
  case MySQLConstants.TYPE_LONG_BLOB:
  case MySQLConstants.TYPE_GEOMETRY:
  metadata[i] = d.readInt(1);
  break;
  case MySQLConstants.TYPE_BIT:
  case MySQLConstants.TYPE_VARCHAR:
  case MySQLConstants.TYPE_NEWDECIMAL:
  metadata[i] = d.readInt(2); // Little-endian
  break;
  case MySQLConstants.TYPE_SET:
  case MySQLConstants.TYPE_ENUM:
  case MySQLConstants.TYPE_STRING:
  metadata[i] = CodecUtils.toInt(d.readBytes(2), 0, 2); // Big-endian
  break;
  case MySQLConstants.TYPE_TIME2:
  case MySQLConstants.TYPE_DATETIME2:
  case MySQLConstants.TYPE_TIMESTAMP2:
  metadata[i] = d.readInt(1);
  break;
  default:
  metadata[i] = 0;
  }
  }
  return new Metadata(type, metadata);
  }
  }