001: /*
002: * hgcommons 7
003: * Hammurapi Group Common Library
004: * Copyright (C) 2003 Hammurapi Group
005: *
006: * This program is free software; you can redistribute it and/or
007: * modify it under the terms of the GNU Lesser General Public
008: * License as published by the Free Software Foundation; either
009: * version 2 of the License, or (at your option) any later version.
010: *
011: * This program is distributed in the hope that it will be useful,
012: * but WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * Lesser General Public License for more details.
015: *
016: * You should have received a copy of the GNU Lesser General Public
017: * License along with this library; if not, write to the Free Software
018: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
019: *
020: * URL: http://www.hammurapi.biz/hammurapi-biz/ef/xmenu/hammurapi-group/products/products/hgcommons/index.html
021: * e-Mail: support@hammurapi.biz
022: */
023: package biz.hammurapi.sql.columns;
024:
025: import java.sql.PreparedStatement;
026: import java.sql.ResultSet;
027: import java.sql.ResultSetMetaData;
028: import java.sql.SQLException;
029:
030: import biz.hammurapi.config.Context;
031: import biz.hammurapi.convert.CompositeConverter;
032:
033: /**
034: * @author Pavel Vlasov
035: *
036: * @version $Revision: 1.12 $
037: */
038: public class DoubleColumn extends Column {
039: private double value;
040:
041: // Original stuff
042: private double originalValue;
043: private boolean isOriginalValueSet;
044:
045: public double getOriginalValue() {
046: return isOriginalValueSet ? originalValue : value;
047: }
048:
049: public void parameterizeOriginal(PreparedStatement ps, int idx)
050: throws SQLException {
051: ps.setDouble(idx, getOriginalValue());
052: }
053:
054: public void setOriginal() {
055: originalValue = value;
056: isOriginalValueSet = true;
057: }
058:
059: // End of original stuff
060:
061: public double getValue() {
062: return value;
063: }
064:
065: public void setValue(double value) {
066: if (force || this .value != value) {
067: this .value = value;
068: onChange();
069: }
070: }
071:
072: public DoubleColumn(String name, boolean isPrimaryKey) {
073: super (name, isPrimaryKey);
074: }
075:
076: public DoubleColumn(String name, boolean isPrimaryKey, double value) {
077: super (name, isPrimaryKey);
078: this .value = value;
079: }
080:
081: public DoubleColumn(String name, boolean isPrimaryKey, ResultSet rs)
082: throws SQLException {
083: super (name, isPrimaryKey);
084: ResultSetMetaData metaData = rs.getMetaData();
085: for (int i = 1, c = metaData.getColumnCount(); i <= c; i++) {
086: if (name.equals(metaData.getColumnName(i))) {
087: this .value = rs.getDouble(i);
088: break;
089: }
090: }
091: }
092:
093: protected void parameterizeInternal(PreparedStatement ps, int idx)
094: throws SQLException {
095: ps.setDouble(idx, value);
096: }
097:
098: public Object getObjectValue(boolean ov) {
099: if (ov) {
100: return isOriginalValueSet ? new Double(originalValue)
101: : null;
102: }
103: return new Double(value);
104: }
105:
106: public String toString() {
107: return getName() + (isModified() ? "*" : "") + "=" + value;
108: }
109:
110: public boolean equals(Object otherColumn) {
111: if (otherColumn instanceof DoubleColumn) {
112: return value == ((DoubleColumn) otherColumn).value;
113: }
114:
115: return false;
116: }
117:
118: public int hashCode() {
119: return getName().hashCode() ^ new Double(value).hashCode();
120: }
121:
122: /* (non-Javadoc)
123: * @see biz.hammurapi.sql.columns.Column#load(java.lang.String)
124: */
125: public void load(String textValue) {
126: setValue(Double.parseDouble(textValue));
127: }
128:
129: public void clear() {
130: setValue(0);
131: clearModified();
132: }
133:
134: public void configure(Context context, CompositeConverter converter) {
135: Object o = context.get(getName());
136: if (o != null) {
137: setValue(((Number) converter
138: .convert(o, double.class, false)).doubleValue());
139: }
140: }
141:
142: protected String getAlignment() {
143: return "right";
144: }
145:
146: protected String getType() {
147: return "double";
148: }
149:
150: public void set(Column source) {
151: setValue(((DoubleColumn) source).getValue());
152: }
153:
154: /**
155: * Clears modified flag and sets original value to current value.
156: */
157: public void clearModified() {
158: super.clearModified();
159: originalValue = value;
160: }
161: }
|