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.SQLException;
038: import java.sql.Types;
039:
040: /**
041: * The primitive float type.
042: */
043: public class PrimitiveFloatType extends PrimitiveType {
044: private static final L10N L = new L10N(PrimitiveFloatType.class);
045:
046: private static final PrimitiveFloatType FLOAT_TYPE = new PrimitiveFloatType();
047:
048: private PrimitiveFloatType() {
049: }
050:
051: /**
052: * Returns the boolean type.
053: */
054: public static PrimitiveFloatType create() {
055: return FLOAT_TYPE;
056: }
057:
058: /**
059: * Returns the type name.
060: */
061: public String getName() {
062: return "float";
063: }
064:
065: /**
066: * Returns true for a numeric type.
067: */
068: public boolean isNumeric() {
069: return true;
070: }
071:
072: /**
073: * Returns the type as a foreign key.
074: */
075: public Type getForeignType() {
076: return FloatType.create();
077: }
078:
079: /**
080: * Generates the type for the table.
081: */
082: public String generateCreateColumnSQL(AmberPersistenceUnit manager,
083: int length, int precision, int scale) {
084: return manager.getCreateColumnSQL(Types.REAL, length,
085: precision, scale);
086: }
087:
088: /**
089: * Generates a string to load the property.
090: */
091: public int generateLoad(JavaWriter out, String rs, String indexVar,
092: int index) throws IOException {
093: out.print(rs + ".getFloat(" + indexVar + " + " + index + ")");
094:
095: return index + 1;
096: }
097:
098: /**
099: * Generates a string to set the property.
100: */
101: public void generateSet(JavaWriter out, String pstmt, String index,
102: String value) throws IOException {
103: out.println(pstmt + ".setFloat(" + index + "++, " + value
104: + ");");
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.REAL);");
114: }
115:
116: /**
117: * Converts to an object.
118: */
119: public String toObject(String value) {
120: return "new Float(" + value + ")";
121: }
122:
123: /**
124: * Converts the value.
125: */
126: public String generateCastFromObject(String value) {
127: return "((Number) " + value + ").floatValue()";
128: }
129:
130: /**
131: * Sets the value.
132: */
133: public void setParameter(PreparedStatement pstmt, int index,
134: Object value) throws SQLException {
135: if (value instanceof Number) // jpa/141a
136: pstmt.setString(index, value.toString());
137: else
138: throw new IllegalArgumentException(
139: "Invalid argument for setParameter.");
140: }
141: }
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