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org.apache.torque.engine.platform.PlatformDefaultImpl |
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1 | package org.apache.torque.engine.platform; |
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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.util.Hashtable; |
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20 | import java.util.Iterator; |
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21 | import java.util.Map; |
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22 | ||
23 | import org.apache.torque.engine.database.model.Domain; |
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24 | import org.apache.torque.engine.database.model.SchemaType; |
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25 | ||
26 | ||
27 | /** |
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28 | * Default implementation for the Platform interface. |
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29 | * |
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30 | * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a> |
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31 | * @version $Id: PlatformDefaultImpl.java 239626 2005-08-24 12:19:51Z henning $ |
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32 | */ |
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33 | public class PlatformDefaultImpl implements Platform |
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34 | { |
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35 | private Map schemaDomainMap; |
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36 | ||
37 | /** |
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38 | * Default constructor. |
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39 | */ |
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40 | public PlatformDefaultImpl() |
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41 | 15 | { |
42 | 15 | initialize(); |
43 | 15 | } |
44 | ||
45 | private void initialize() |
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46 | { |
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47 | 15 | schemaDomainMap = new Hashtable(30); |
48 | 15 | Iterator iter = SchemaType.iterator(); |
49 | 465 | while (iter.hasNext()) |
50 | { |
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51 | 450 | SchemaType type = (SchemaType) iter.next(); |
52 | 450 | schemaDomainMap.put(type, new Domain(type)); |
53 | } |
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54 | 15 | schemaDomainMap.put(SchemaType.BOOLEANCHAR, |
55 | new Domain(SchemaType.BOOLEANCHAR, "CHAR")); |
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56 | 15 | schemaDomainMap.put(SchemaType.BOOLEANINT, |
57 | new Domain(SchemaType.BOOLEANINT, "INTEGER")); |
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58 | 15 | } |
59 | ||
60 | protected void setSchemaDomainMapping(Domain domain) |
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61 | { |
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62 | 100 | schemaDomainMap.put(domain.getType(), domain); |
63 | 100 | } |
64 | ||
65 | /** |
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66 | * @see Platform#getMaxColumnNameLength() |
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67 | */ |
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68 | public int getMaxColumnNameLength() |
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69 | { |
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70 | 33 | return 64; |
71 | } |
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72 | ||
73 | /** |
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74 | * @see Platform#getNativeIdMethod() |
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75 | */ |
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76 | public String getNativeIdMethod() |
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77 | { |
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78 | 10 | return Platform.IDENTITY; |
79 | } |
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80 | ||
81 | /** |
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82 | * @see Platform#getDomainForJdbcType(SchemaType) |
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83 | */ |
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84 | public Domain getDomainForSchemaType(SchemaType jdbcType) |
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85 | { |
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86 | 3448 | return (Domain) schemaDomainMap.get(jdbcType); |
87 | } |
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88 | ||
89 | /** |
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90 | * @return Only produces a SQL fragment if null values are |
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91 | * disallowed. |
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92 | * @see Platform#getNullString(boolean) |
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93 | */ |
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94 | public String getNullString(boolean notNull) |
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95 | { |
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96 | // TODO: Check whether this is true for all DBs. Also verify |
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97 | // the old Sybase templates. |
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98 | 42 | return (notNull ? "NOT NULL" : ""); |
99 | } |
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100 | ||
101 | /** |
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102 | * @see Platform#getAutoIncrement() |
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103 | */ |
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104 | public String getAutoIncrement() |
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105 | { |
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106 | 6 | return "IDENTITY"; |
107 | } |
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108 | ||
109 | /** |
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110 | * @see Platform#hasScale(String) |
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111 | * TODO collect info for all platforms |
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112 | */ |
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113 | public boolean hasScale(String sqlType) |
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114 | { |
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115 | 0 | return true; |
116 | } |
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117 | ||
118 | /** |
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119 | * @see Platform#hasSize(String) |
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120 | * TODO collect info for all platforms |
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121 | */ |
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122 | public boolean hasSize(String sqlType) |
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123 | { |
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124 | 33 | return true; |
125 | } |
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126 | ||
127 | } |
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