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org.apache.torque.adapter.DBSapDB |
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1 | package org.apache.torque.adapter; |
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2 | ||
3 | /* |
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4 | * Copyright 2001-2005 The Apache Software Foundation. |
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5 | * |
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6 | * Licensed under the Apache License, Version 2.0 (the "License") |
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7 | * you may not use this file except in compliance with the License. |
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8 | * You may obtain a copy of the License at |
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9 | * |
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10 | * http://www.apache.org/licenses/LICENSE-2.0 |
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11 | * |
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12 | * Unless required by applicable law or agreed to in writing, software |
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13 | * distributed under the License is distributed on an "AS IS" BASIS, |
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14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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15 | * See the License for the specific language governing permissions and |
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16 | * limitations under the License. |
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17 | */ |
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18 | ||
19 | import java.sql.Connection; |
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20 | import java.sql.SQLException; |
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21 | import java.sql.Statement; |
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22 | ||
23 | /** |
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24 | * This is used to connect to SapDB databases. |
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25 | * |
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26 | * <a href="http://www.sapdb.org">http://www.sapdb.org</a> |
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27 | * |
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28 | * @author <a href="mailto:dave.polito@planetcad.com">Dave Polito</a> |
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29 | * @version $Id: DBSapDB.java 239630 2005-08-24 12:25:32Z henning $ |
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30 | */ |
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31 | public class DBSapDB extends DB |
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32 | { |
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33 | /** |
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34 | * Empty constructor. |
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35 | */ |
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36 | protected DBSapDB() |
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37 | 0 | { |
38 | 0 | } |
39 | ||
40 | /** |
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41 | * This method is used to ignore case. |
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42 | * |
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43 | * @param in The string to transform to upper case. |
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44 | * @return The upper case string. |
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45 | */ |
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46 | public String toUpperCase(String in) |
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47 | { |
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48 | 0 | return new StringBuffer("UPPER(").append(in).append(")").toString(); |
49 | } |
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50 | ||
51 | /** |
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52 | * This method is used to ignore case. |
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53 | * |
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54 | * @param in The string whose case to ignore. |
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55 | * @return The string in a case that can be ignored. |
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56 | */ |
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57 | public String ignoreCase(String in) |
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58 | { |
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59 | 0 | return new StringBuffer("UPPER(").append(in).append(")").toString(); |
60 | } |
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61 | ||
62 | /** |
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63 | * @see org.apache.torque.adapter.DB#getIDMethodType() |
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64 | */ |
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65 | public String getIDMethodType() |
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66 | { |
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67 | 0 | return SEQUENCE; |
68 | } |
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69 | ||
70 | /** |
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71 | * Returns the next key from a sequence. Uses the following |
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72 | * implementation: |
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73 | * |
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74 | * <blockquote><code><pre> |
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75 | * select sequenceName.nextval from dual |
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76 | * </pre></code></blockquote> |
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77 | * |
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78 | * @param sequenceName The name of the sequence (should be of type |
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79 | * <code>String</code>). |
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80 | * @return SQL to retreive the next database key. |
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81 | * @see org.apache.torque.adapter.DB#getIDMethodSQL(Object) |
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82 | */ |
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83 | public String getIDMethodSQL(Object sequenceName) |
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84 | { |
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85 | 0 | return ("select " + sequenceName + ".nextval from dual"); |
86 | } |
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87 | ||
88 | /** |
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89 | * Locks the specified table. |
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90 | * |
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91 | * @param con The JDBC connection to use. |
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92 | * @param table The name of the table to lock. |
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93 | * @exception SQLException No Statement could be created or executed. |
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94 | */ |
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95 | public void lockTable(Connection con, String table) throws SQLException |
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96 | { |
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97 | 0 | Statement statement = con.createStatement(); |
98 | ||
99 | 0 | StringBuffer stmt = new StringBuffer(); |
100 | 0 | stmt.append("SELECT next_id FROM ") |
101 | .append(table) |
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102 | .append(" FOR UPDATE"); |
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103 | ||
104 | 0 | statement.executeQuery(stmt.toString()); |
105 | 0 | } |
106 | ||
107 | /** |
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108 | * This method is for the SqlExpression.quoteAndEscape rules. The rule is, |
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109 | * any string in a SqlExpression with a BACKSLASH will either be changed to |
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110 | * "\\" or left as "\". SapDB does not need the escape character. |
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111 | * |
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112 | * @return false. |
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113 | */ |
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114 | ||
115 | public boolean escapeText() |
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116 | { |
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117 | 0 | return false; |
118 | } |
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119 | ||
120 | /** |
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121 | * Unlocks the specified table. |
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122 | * |
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123 | * @param con The JDBC connection to use. |
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124 | * @param table The name of the table to unlock. |
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125 | * @exception SQLException No Statement could be created or |
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126 | * executed. |
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127 | */ |
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128 | public void unlockTable(Connection con, String table) throws SQLException |
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129 | { |
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130 | // Tables in SapDB are unlocked when a commit is issued. The |
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131 | // user may have issued a commit but do it here to be sure. |
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132 | 0 | con.commit(); |
133 | 0 | } |
134 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |