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.PreparedStatement;
037: import java.sql.ResultSet;
038: import java.sql.SQLException;
039: import java.sql.Types;
040:
041: /**
042: * Represents a java.util.Short type
043: */
044: public class ShortType extends Type {
045: private static final L10N L = new L10N(ShortType.class);
046:
047: private static final ShortType SHORT_TYPE = new ShortType();
048:
049: private ShortType() {
050: }
051:
052: /**
053: * Returns the singleton Short type.
054: */
055: public static ShortType create() {
056: return SHORT_TYPE;
057: }
058:
059: /**
060: * Returns the type name.
061: */
062: public String getName() {
063: return "java.lang.Short";
064: }
065:
066: /**
067: * Returns true for a numeric type.
068: */
069: public boolean isNumeric() {
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.SMALLINT, 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.ShortType.toShort(" + rs
088: + ".getShort(" + indexVar + " + " + index + "), " + rs
089: + ".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.SMALLINT);");
102: out.println("else");
103: out.println(" " + pstmt + ".setShort(" + index + "++, "
104: + value + ".shortValue());");
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.SMALLINT);");
114: }
115:
116: /**
117: * Generates a string to set the property.
118: */
119: public void generateSetVersion(JavaWriter out, String pstmt,
120: String index, String value) throws IOException {
121: out.println("if (" + value + " == null)");
122: out.println(" " + pstmt + ".setShort(" + index + "++, 1);");
123: out.println("else");
124: out.println(" " + pstmt + ".setShort(" + index + "++, "
125: + value + ".shortValue() + 1);");
126: }
127:
128: /**
129: * Generates the increment version.
130: */
131: public String generateIncrementVersion(String value)
132: throws IOException {
133: return value + ".shortValue() + 1";
134: }
135:
136: /**
137: * Converts to an object.
138: */
139: public Object toObject(long value) {
140: return new Short((short) value);
141: }
142:
143: /**
144: * Converts a value to a int.
145: */
146: public static Short toShort(int value, boolean wasNull) {
147: if (wasNull)
148: return null;
149: else
150: return new Short((short) value);
151: }
152:
153: /**
154: * Sets the value.
155: */
156: public void setParameter(PreparedStatement pstmt, int index,
157: Object value) throws SQLException {
158: if (value == null)
159: pstmt.setNull(index, 0);
160: else
161: pstmt.setShort(index, ((Number) value).shortValue());
162: }
163:
164: /**
165: * Gets the value.
166: */
167: public Object getObject(ResultSet rs, int index)
168: throws SQLException {
169: short value = rs.getShort(index);
170:
171: return rs.wasNull() ? null : new Short(value);
172: }
173: }
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