001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: * Free Software Foundation, Inc.
023: * 59 Temple Place, Suite 330
024: * Boston, MA 02111-1307 USA
025: *
026: * @author Scott Ferguson
027: */
028:
029: package com.caucho.amber.type;
030:
031: import com.caucho.amber.manager.AmberPersistenceUnit;
032: import com.caucho.java.JavaWriter;
033: import com.caucho.util.L10N;
034:
035: import java.io.IOException;
036: import java.sql.ResultSet;
037: import java.sql.SQLException;
038: import java.sql.Types;
039:
040: /**
041: * Represents a java.util.Byte type
042: */
043: public class ByteType extends Type {
044: private static final L10N L = new L10N(ByteType.class);
045:
046: private static final ByteType BYTE_TYPE = new ByteType();
047:
048: private ByteType() {
049: }
050:
051: /**
052: * Returns the singleton Byte type.
053: */
054: public static ByteType create() {
055: return BYTE_TYPE;
056: }
057:
058: /**
059: * Returns the type name.
060: */
061: public String getName() {
062: return "java.lang.Byte";
063: }
064:
065: /**
066: * Returns true for a numeric type.
067: */
068: public boolean isNumeric() {
069: return true;
070: }
071:
072: /**
073: * Generates the type for the table.
074: */
075: public String generateCreateColumnSQL(AmberPersistenceUnit manager,
076: int length, int precision, int scale) {
077: return manager.getCreateColumnSQL(Types.TINYINT, length,
078: precision, scale);
079: }
080:
081: /**
082: * Generates a string to load the property.
083: */
084: public int generateLoad(JavaWriter out, String rs, String indexVar,
085: int index) throws IOException {
086: out.print("com.caucho.amber.type.ByteType.toByte(" + rs
087: + ".getByte(" + indexVar + " + " + index + "), " + rs
088: + ".wasNull())");
089:
090: return index + 1;
091: }
092:
093: /**
094: * Generates a string to set the property.
095: */
096: public void generateSet(JavaWriter out, String pstmt, String index,
097: String value) throws IOException {
098: out.println("if (" + value + " == null)");
099: out.println(" " + pstmt + ".setNull(" + index
100: + "++, java.sql.Types.TINYINT);");
101: out.println("else");
102: out.println(" " + pstmt + ".setByte(" + index + "++, " + value
103: + ".byteValue());");
104: }
105:
106: /**
107: * Generates a string to set the property.
108: */
109: public void generateSetNull(JavaWriter out, String pstmt,
110: String index) throws IOException {
111: out.println(pstmt + ".setNull(" + index
112: + "++, java.sql.Types.TINYINT);");
113: }
114:
115: /**
116: * Converts a value to a int.
117: */
118: public static Byte toByte(int value, boolean wasNull) {
119: if (wasNull)
120: return null;
121: else
122: return new Byte((byte) value);
123: }
124:
125: /**
126: * Gets the value.
127: */
128: public Object getObject(ResultSet rs, int index)
129: throws SQLException {
130: int value = rs.getByte(index);
131:
132: return rs.wasNull() ? null : new Byte((byte) value);
133: }
134: }
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