Source Code Cross Referenced for JdbcGenericOID.java in  » Testing » PolePosition-0.20 » com » versant » core » jdbc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » PolePosition 0.20 » com.versant.core.jdbc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 1998 - 2005 Versant Corporation
003:         * All rights reserved. This program and the accompanying materials
004:         * are made available under the terms of the Eclipse Public License v1.0
005:         * which accompanies this distribution, and is available at
006:         * http://www.eclipse.org/legal/epl-v10.html
007:         *
008:         * Contributors:
009:         * Versant Corporation - initial API and implementation
010:         */
011:        package com.versant.core.jdbc;
012:
013:        import com.versant.core.common.GenericOID;
014:        import com.versant.core.common.OID;
015:        import com.versant.core.metadata.ClassMetaData;
016:        import com.versant.core.jdbc.metadata.JdbcColumn;
017:        import com.versant.core.jdbc.metadata.JdbcField;
018:        import com.versant.core.jdbc.metadata.JdbcClass;
019:
020:        import java.sql.ResultSet;
021:        import java.sql.SQLException;
022:        import java.sql.PreparedStatement;
023:
024:        /**
025:         * Adds JDBC specific methods to GenericOID.
026:         */
027:        public class JdbcGenericOID extends GenericOID implements  JdbcOID {
028:
029:            public JdbcGenericOID() {
030:            }
031:
032:            public JdbcGenericOID(ClassMetaData cmd, boolean resolved) {
033:                super (cmd, resolved);
034:            }
035:
036:            /**
037:             * Populate this OID from the given ResultSet. The firstCol parameter
038:             * specifies the column index of the first column to read from rs. If
039:             * the primary key consists of multiple columns then they will be
040:             * present in the same order as defined in the meta data.
041:             *
042:             * @return False if OID is 'null', true otherwise
043:             */
044:            public boolean copyKeyFields(ResultSet rs, int firstCol)
045:                    throws SQLException {
046:                JdbcColumn[] pkc = ((JdbcClass) cmd.storeClass).table.pk;
047:                for (int i = 0; i < pkc.length; i++) {
048:                    JdbcColumn c = pkc[i];
049:                    if (c.converter != null) {
050:                        pk[i] = c.converter.get(rs, firstCol++, c);
051:                    } else {
052:                        pk[i] = JdbcUtils.get(rs, firstCol++, c.javaTypeCode,
053:                                c.scale);
054:                    }
055:                    if (rs.wasNull())
056:                        return false;
057:                }
058:                return true;
059:            }
060:
061:            /**
062:             * This is for appId
063:             */
064:            public boolean copyKeyFields(ResultSet rs, JdbcField[] pks,
065:                    int[] pkFieldIndexs) throws SQLException {
066:                for (int j = 0; j < pkFieldIndexs.length; j++) {
067:                    JdbcColumn c = pks[pkFieldIndexs[j]].mainTableCols[0];
068:                    if (c.converter != null) {
069:                        pk[j] = c.converter.get(rs, pkFieldIndexs[j] + 1, c);
070:                    } else {
071:                        pk[j] = JdbcUtils.get(rs, pkFieldIndexs[j] + 1,
072:                                c.javaTypeCode, c.scale);
073:                    }
074:                    if (rs.wasNull())
075:                        return false;
076:                }
077:                return true;
078:            }
079:
080:            /**
081:             * Return false if oid is null.
082:             */
083:            public boolean validateKeyFields(ResultSet rs, int firstCol)
084:                    throws SQLException {
085:                JdbcColumn[] pkc = ((JdbcClass) cmd.storeClass).table.pk;
086:                for (int i = 0; i < pkc.length; i++) {
087:                    JdbcColumn c = pkc[i];
088:                    if (c.converter != null) {
089:                        c.converter.get(rs, firstCol++, c);
090:                    } else {
091:                        JdbcUtils.get(rs, firstCol++, c.javaTypeCode, c.scale);
092:                    }
093:                    if (rs.wasNull())
094:                        return false;
095:                }
096:                return true;
097:            }
098:
099:            /**
100:             * Set parameters on a PrepareStatement from this OID. The firstParam
101:             * parameter specifies the column index of the first parameter to set.
102:             * If the primary key consists of multiple parameters then they must
103:             * all be set in the same order as defined in the meta data. The new
104:             * firstParam value must be returned i.e. if firstParam started as 3 and
105:             * our pk consists of 2 columns then 5 must be returned.
106:             */
107:            public int setParams(PreparedStatement ps, int firstParam)
108:                    throws SQLException {
109:                JdbcColumn[] pkc = ((JdbcClass) cmd.storeClass).table.pk;
110:                for (int i = 0; i < pkc.length; i++) {
111:                    JdbcColumn c = pkc[i];
112:                    if (c.converter != null) {
113:                        c.converter.set(ps, firstParam++, c, pk[i]);
114:                    } else {
115:                        JdbcUtils.set(ps, firstParam++, pk[i], c.javaTypeCode,
116:                                c.jdbcType);
117:                    }
118:                }
119:                return firstParam;
120:            }
121:
122:            /**
123:             * Set parameters on a PrepareStatement from this OID. Columns in pkc
124:             * that return false from isForUpdate() should be ignored.
125:             */
126:            public int setParams(PreparedStatement ps, int firstParam,
127:                    JdbcColumn[] pkc) throws SQLException {
128:                for (int i = 0; i < pkc.length; i++) {
129:                    JdbcColumn c = pkc[i];
130:                    if (c.isForUpdate()) {
131:                        if (c.converter != null) {
132:                            c.converter.set(ps, firstParam++, c, pk[i]);
133:                        } else {
134:                            JdbcUtils.set(ps, firstParam++, pk[i],
135:                                    c.javaTypeCode, c.jdbcType);
136:                        }
137:                    }
138:                }
139:                return firstParam;
140:            }
141:
142:            /**
143:             * Util method to 'setNull' for oid param.
144:             */
145:            public static int setNullParams(PreparedStatement ps,
146:                    int firstParam, ClassMetaData cmd) throws SQLException {
147:                JdbcColumn[] pkc = ((JdbcClass) cmd.storeClass).table.pk;
148:                for (int i = 0; i < pkc.length; i++) {
149:                    ps.setNull(firstParam++, pkc[i].jdbcType);
150:                }
151:                return firstParam;
152:            }
153:
154:            protected GenericOID newInstance() {
155:                return new JdbcGenericOID();
156:            }
157:
158:            public String toSString() {
159:                StringBuffer s = new StringBuffer();
160:                s.append("GenericOID@");
161:                s.append(Integer.toHexString(System.identityHashCode(this )));
162:                s.append(' ');
163:                if (cmd == null) {
164:                    s.append("classIndex ");
165:                    s.append(cmd.index);
166:                } else {
167:                    String n = cmd.qname;
168:                    int i = n.lastIndexOf('.');
169:                    if (i >= 0)
170:                        n = n.substring(i + 1);
171:                    s.append(n);
172:                    s.append(' ');
173:                    JdbcColumn[] pkc = ((JdbcClass) cmd.storeClass).table.pk;
174:                    for (i = 0; i < pkc.length; i++) {
175:                        JdbcColumn c = pkc[i];
176:                        s.append(c.name);
177:                        s.append('=');
178:                        s.append(pk[i]);
179:                    }
180:                }
181:                if (!isResolved())
182:                    s.append(" NOTRES ");
183:                return s.toString();
184:            }
185:
186:        }
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