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.math.BigDecimal;
037: import java.math.BigInteger;
038: import java.sql.PreparedStatement;
039: import java.sql.ResultSet;
040: import java.sql.SQLException;
041: import java.sql.Types;
042:
043: /**
044: * The type of a property.
045: */
046: public class BigIntegerType extends Type {
047: private static final L10N L = new L10N(BigIntegerType.class);
048:
049: private BigIntegerType() {
050: }
051:
052: /**
053: * Returns the singleton BigInteger type.
054: */
055: public static BigIntegerType create() {
056: return new BigIntegerType();
057: }
058:
059: /**
060: * Returns the type name.
061: */
062: public String getName() {
063: return "java.math.BigInteger";
064: }
065:
066: /**
067: * Returns true for a numeric type.
068: */
069: public boolean isNumeric() {
070: return true;
071: }
072:
073: /**
074: * Generates a string to load the property.
075: */
076: public int generateLoad(JavaWriter out, String rs, String indexVar,
077: int index) throws IOException {
078: out.print(rs + ".getBigDecimal(" + indexVar + " + " + index
079: + ")");
080: out.print(" == null || " + rs + ".wasNull() ? null : ");
081: out.print(rs + ".getBigDecimal(" + indexVar + " + " + index
082: + ").toBigInteger()");
083:
084: return index + 1;
085: }
086:
087: /**
088: * Generates a string to set the property.
089: */
090: public void generateSet(JavaWriter out, String pstmt, String index,
091: String value) throws IOException {
092: out.println("if (" + value + " == null)");
093: out.println(" " + pstmt + ".setNull(" + index
094: + "++, java.sql.Types.DECIMAL);");
095: out.println("else");
096: out.println(" " + pstmt + ".setBigDecimal(" + index
097: + "++, new java.math.BigDecimal(" + value + "));");
098: }
099:
100: /**
101: * Sets the value.
102: */
103: public void setParameter(PreparedStatement pstmt, int index,
104: Object value) throws SQLException {
105: if (value == null)
106: pstmt.setNull(index, java.sql.Types.DECIMAL);
107: else
108: pstmt.setBigDecimal(index, new BigDecimal(
109: (BigInteger) value));
110: }
111:
112: /**
113: * Gets the value.
114: */
115: public Object getObject(ResultSet rs, int index)
116: throws SQLException {
117: BigDecimal v = rs.getBigDecimal(index);
118:
119: if (rs.wasNull())
120: return null;
121:
122: return v.toBigInteger();
123: }
124:
125: public String generateCreateColumnSQL(AmberPersistenceUnit manager,
126: int length, int precision, int scale) {
127: return manager.getCreateColumnSQL(Types.NUMERIC, length,
128: precision, scale);
129: }
130: }
|