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: *
023: * Free Software Foundation, Inc.
024: * 59 Temple Place, Suite 330
025: * Boston, MA 02111-1307 USA
026: *
027: * @author Scott Ferguson
028: */
029:
030: package com.caucho.amber.type;
031:
032: import com.caucho.amber.manager.AmberPersistenceUnit;
033: import com.caucho.java.JavaWriter;
034: import com.caucho.util.L10N;
035:
036: import java.io.IOException;
037: import java.sql.ResultSet;
038: import java.sql.SQLException;
039: import java.sql.Types;
040:
041: /**
042: * The character type.
043: */
044: public class CharacterType extends Type {
045: private static final L10N L = new L10N(CharacterType.class);
046:
047: private static final CharacterType CHAR_TYPE = new CharacterType();
048:
049: private CharacterType() {
050: }
051:
052: /**
053: * Returns the character type.
054: */
055: public static CharacterType create() {
056: return CHAR_TYPE;
057: }
058:
059: /**
060: * Returns the type name.
061: */
062: public String getName() {
063: return "java.lang.Character";
064: }
065:
066: /**
067: * Generates the type for the table.
068: */
069: public String generateCreateColumnSQL(AmberPersistenceUnit manager,
070: int length, int precision, int scale) {
071: return manager.getCreateColumnSQL(Types.CHAR, 0, precision,
072: scale);
073: }
074:
075: /**
076: * Generates a string to load the property.
077: */
078: public int generateLoad(JavaWriter out, String rs, String indexVar,
079: int index) throws IOException {
080: out.print("com.caucho.amber.type.CharacterType.toChar(" + rs
081: + ".getString(" + indexVar + " + " + index + "))");
082:
083: return index + 1;
084: }
085:
086: /**
087: * Generates a string to set the property.
088: */
089: public void generateSet(JavaWriter out, String pstmt, String index,
090: String value) throws IOException {
091: out.println("if (" + value + " == null)");
092: out.println(" " + pstmt + ".setNull(" + index
093: + "++, java.sql.Types.CHAR);");
094: out.println("else");
095: out.println(" " + pstmt + ".setString(" + index
096: + "++, String.valueOf(" + value + "));");
097: }
098:
099: /**
100: * Generates a string to set the property.
101: */
102: public void generateSetNull(JavaWriter out, String pstmt,
103: String index) throws IOException {
104: out.println(pstmt + ".setNull(" + index
105: + "++, java.sql.Types.CHAR);");
106: }
107:
108: /**
109: * Converts a value to a char.
110: */
111: public static Character toChar(String value) {
112: if (value == null || value.length() == 0)
113: return null;
114: else
115: return new Character(value.charAt(0));
116: }
117:
118: /**
119: * Gets the value.
120: */
121: public Object getObject(ResultSet rs, int index)
122: throws SQLException {
123: String value = rs.getString(index);
124:
125: return (value == null || value.length() == 0) ? null
126: : new Character(value.charAt(0));
127: }
128: }
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