| /* |
| * 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 org.apache.geode.pdx; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Date; |
| |
| import org.apache.geode.internal.DSCODE; |
| import org.apache.geode.internal.InternalDataSerializer; |
| import org.apache.geode.pdx.internal.DataSize; |
| |
| /** |
| * Every field of a pdx must have one of these types. The type of that field can never change. If |
| * you do want to be able to change a field's class then its field type needs to be {@link #OBJECT}. |
| * Some field types are always serialized with a certain number of bytes; these are called |
| * "fixed-width". Others are serialized with a variable number of bytes; these are called |
| * "variable-width". |
| * |
| * @since GemFire 6.6.2 |
| */ |
| public enum FieldType { |
| BOOLEAN(true, DataSize.BOOLEAN_SIZE, "boolean", new byte[] {0}, false), |
| BYTE(true, DataSize.BYTE_SIZE, "byte", new byte[] {0}, 0), |
| CHAR(true, DataSize.CHAR_SIZE, "char", new byte[] {0, 0}, (char) 0), |
| SHORT(true, DataSize.SHORT_SIZE, "short", new byte[] {0, 0}, 0), |
| INT(true, DataSize.INTEGER_SIZE, "int", new byte[] {0, 0, 0, 0}, 0), |
| LONG(true, DataSize.LONG_SIZE, "long", new byte[] {0, 0, 0, 0, 0, 0, 0, 0}, 0), |
| FLOAT(true, DataSize.FLOAT_SIZE, "float", new byte[] {0, 0, 0, 0}, 0), |
| DOUBLE(true, DataSize.DOUBLE_SIZE, "double", new byte[] {0, 0, 0, 0, 0, 0, 0, 0}, 0), |
| DATE(true, DataSize.DATE_SIZE, "Date", new byte[] {-1, -1, -1, -1, -1, -1, -1, -1}, null), |
| STRING(false, -1, "String", new byte[] {DSCODE.NULL_STRING.toByte()}, null), |
| OBJECT(false, -1, "Object", new byte[] {DSCODE.NULL.toByte()}, null), |
| BOOLEAN_ARRAY(false, -1, "boolean[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| CHAR_ARRAY(false, -1, "char[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| BYTE_ARRAY(false, -1, "byte[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| SHORT_ARRAY(false, -1, "short[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| INT_ARRAY(false, -1, "int[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| LONG_ARRAY(false, -1, "long[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| FLOAT_ARRAY(false, -1, "float[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| DOUBLE_ARRAY(false, -1, "double[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| STRING_ARRAY(false, -1, "String[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| OBJECT_ARRAY(false, -1, "Object[]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null), |
| ARRAY_OF_BYTE_ARRAYS(false, -1, "byte[][]", new byte[] {InternalDataSerializer.NULL_ARRAY}, null); |
| |
| private final boolean isFixedWidth; |
| /** |
| * For fixed width fields. All others have -1. |
| */ |
| private final int width; |
| private final String name; |
| private final ByteBuffer defaultSerializedValue; |
| private final Object defaultValue; |
| |
| private FieldType(boolean isFixedWidth, int width, String name, byte[] defaultBytes, |
| Object defaultValue) { |
| this.isFixedWidth = isFixedWidth; |
| this.width = width; |
| this.name = name; |
| this.defaultSerializedValue = ByteBuffer.wrap(defaultBytes).asReadOnlyBuffer(); |
| this.defaultValue = defaultValue; |
| } |
| |
| /** |
| * Returns true if the type is "fixed-width"; false if it is "variable-width". |
| */ |
| public boolean isFixedWidth() { |
| return this.isFixedWidth; |
| } |
| |
| /** |
| * Returns the number of bytes used to serialize fixed-width fields; -1 is returned for |
| * variable-width fields. |
| */ |
| public int getWidth() { |
| return this.width; |
| } |
| |
| @Override |
| public String toString() { |
| return this.name; |
| } |
| |
| /** |
| * Returns a ByteBuffer that contains the serialized encoding of this type's default value. |
| */ |
| public ByteBuffer getDefaultBytes() { |
| return this.defaultSerializedValue; |
| } |
| |
| /** |
| * Given a Class return the corresponding FieldType. |
| */ |
| public static FieldType get(Class<?> c) { |
| if (c.equals(boolean.class)) { |
| return BOOLEAN; |
| } else if (c.equals(byte.class)) { |
| return BYTE; |
| } else if (c.equals(char.class)) { |
| return CHAR; |
| } else if (c.equals(short.class)) { |
| return SHORT; |
| } else if (c.equals(int.class)) { |
| return INT; |
| } else if (c.equals(long.class)) { |
| return LONG; |
| } else if (c.equals(float.class)) { |
| return FLOAT; |
| } else if (c.equals(double.class)) { |
| return DOUBLE; |
| } else if (c.equals(String.class)) { |
| return STRING; |
| } else if (c.equals(Date.class)) { |
| return DATE; |
| } else if (c.isArray()) { |
| if (c.equals(boolean[].class)) { |
| return BOOLEAN_ARRAY; |
| } else if (c.equals(byte[].class)) { |
| return BYTE_ARRAY; |
| } else if (c.equals(char[].class)) { |
| return CHAR_ARRAY; |
| } else if (c.equals(short[].class)) { |
| return SHORT_ARRAY; |
| } else if (c.equals(int[].class)) { |
| return INT_ARRAY; |
| } else if (c.equals(long[].class)) { |
| return LONG_ARRAY; |
| } else if (c.equals(float[].class)) { |
| return FLOAT_ARRAY; |
| } else if (c.equals(double[].class)) { |
| return DOUBLE_ARRAY; |
| } else if (c.equals(String[].class)) { |
| return STRING_ARRAY; |
| } else if (c.equals(byte[][].class)) { |
| return ARRAY_OF_BYTE_ARRAYS; |
| } else { |
| return OBJECT_ARRAY; |
| } |
| } else { |
| return OBJECT; |
| } |
| } |
| |
| public Object getDefaultValue() { |
| return defaultValue; |
| } |
| } |