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 type of a property.
043: */
044: public class BooleanType extends Type {
045: private static final L10N L = new L10N(BooleanType.class);
046:
047: private static final BooleanType BOOLEAN_TYPE = new BooleanType();
048:
049: private BooleanType() {
050: }
051:
052: /**
053: * Returns the string type.
054: */
055: public static BooleanType create() {
056: return BOOLEAN_TYPE;
057: }
058:
059: /**
060: * Returns the type name.
061: */
062: public String getName() {
063: return "java.lang.Boolean";
064: }
065:
066: /**
067: * Returns true for a boolean type.
068: */
069: public boolean isBoolean() {
070: return true;
071: }
072:
073: /**
074: * Generates the type for the table.
075: */
076: public String generateCreateColumnSQL(AmberPersistenceUnit manager,
077: int length, int precision, int scale) {
078: return manager.getCreateColumnSQL(Types.BOOLEAN, length,
079: precision, scale);
080: }
081:
082: /**
083: * Generates a string to load the property.
084: */
085: public int generateLoad(JavaWriter out, String rs, String indexVar,
086: int index) throws IOException {
087: out.print("com.caucho.amber.type.BooleanType.toBoolean(" + rs
088: + ".getBoolean(" + indexVar + " + " + index + "), "
089: + rs + ".wasNull())");
090:
091: return index + 1;
092: }
093:
094: /**
095: * Generates a string to set the property.
096: */
097: public void generateSet(JavaWriter out, String pstmt, String index,
098: String value) throws IOException {
099: out.println("if (" + value + " == null)");
100: out.println(" " + pstmt + ".setNull(" + index
101: + "++, java.sql.Types.BIT);");
102: out.println("else");
103: out.println(" " + pstmt + ".setBoolean(" + index + "++, "
104: + value + ".booleanValue());");
105: }
106:
107: /**
108: * Generates a string to set the property.
109: */
110: public void generateSetNull(JavaWriter out, String pstmt,
111: String index) throws IOException {
112: out.println(pstmt + ".setNull(" + index
113: + "++, java.sql.Types.BIT);");
114: }
115:
116: /**
117: * Converts a value to a boolean.
118: */
119: public static Boolean toBoolean(boolean value, boolean wasNull) {
120: if (wasNull)
121: return null;
122: else
123: return new Boolean(value);
124: }
125:
126: /**
127: * Gets the value.
128: */
129: public Object getObject(ResultSet rs, int index)
130: throws SQLException {
131: boolean value = rs.getBoolean(index);
132:
133: return rs.wasNull() ? null : (value ? Boolean.TRUE
134: : Boolean.FALSE);
135: }
136: }
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