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org.apache.torque.engine.platform.PlatformDerbyImpl |
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1 | package org.apache.torque.engine.platform; |
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2 | ||
3 | /* |
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4 | * Licensed to the Apache Software Foundation (ASF) under one |
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5 | * or more contributor license agreements. See the NOTICE file |
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6 | * distributed with this work for additional information |
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7 | * regarding copyright ownership. The ASF licenses this file |
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8 | * to you under the Apache License, Version 2.0 (the |
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9 | * "License"); you may not use this file except in compliance |
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10 | * with the License. You may obtain a copy of the License at |
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11 | * |
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12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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13 | * |
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14 | * Unless required by applicable law or agreed to in writing, |
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15 | * software distributed under the License is distributed on an |
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16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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17 | * KIND, either express or implied. See the License for the |
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18 | * specific language governing permissions and limitations |
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19 | * under the License. |
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20 | */ |
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21 | ||
22 | import org.apache.torque.engine.database.model.Domain; |
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23 | import org.apache.torque.engine.database.model.SchemaType; |
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24 | import org.apache.torque.engine.database.model.SizedForBitDataDomain; |
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25 | ||
26 | /** |
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27 | * Derby Platform implementation. |
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28 | * |
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29 | * @author <a href="mailto:johnnymac@tiscali.be">Johnny Macchione</a> |
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30 | * @author <a href="Monroe@DukeCE.com">Greg Monroe</a> |
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31 | * @version $Id: PlatformDerbyImpl.java 482880 2006-12-06 03:55:24Z gmonroe $ |
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32 | */ |
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33 | public class PlatformDerbyImpl extends PlatformDefaultImpl |
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34 | { |
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35 | ||
36 | /** |
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37 | * Default constructor. |
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38 | */ |
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39 | public PlatformDerbyImpl() |
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40 | { |
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41 | 0 | super(); |
42 | 0 | initialize(); |
43 | 0 | } |
44 | ||
45 | /** |
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46 | * Initializes db specific domain mapping. |
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47 | */ |
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48 | private void initialize() |
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49 | { |
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50 | 0 | setSchemaDomainMapping( |
51 | new Domain(SchemaType.LONGVARCHAR, "LONG VARCHAR")); |
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52 | ||
53 | 0 | setSchemaDomainMapping( new SizedForBitDataDomain( |
54 | SchemaType.VARBINARY, "VARCHAR", "32672")); |
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55 | 0 | setSchemaDomainMapping( |
56 | new SizedForBitDataDomain(SchemaType.BINARY, "CHAR", "1")); |
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57 | 0 | setSchemaDomainMapping( new Domain(SchemaType.LONGVARBINARY, |
58 | "LONG VARCHAR FOR BIT DATA")); |
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59 | 0 | setSchemaDomainMapping( |
60 | new Domain(SchemaType.LONGVARCHAR, "LONG VARCHAR")); |
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61 | 0 | setSchemaDomainMapping( |
62 | new Domain(SchemaType.BIT,"CHAR(1)")); |
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63 | 0 | setSchemaDomainMapping( |
64 | new Domain(SchemaType.TINYINT, "SMALLINT")); |
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65 | 0 | } |
66 | ||
67 | /** |
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68 | * @see Platform#getMaxColumnNameLength() |
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69 | */ |
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70 | public int getMaxColumnNameLength() |
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71 | { |
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72 | 0 | return 128; |
73 | } |
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74 | ||
75 | /** |
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76 | * @see Platform#getAutoIncrement() |
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77 | */ |
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78 | public String getAutoIncrement() |
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79 | { |
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80 | 0 | return "GENERATED BY DEFAULT AS IDENTITY"; |
81 | } |
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82 | ||
83 | /** |
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84 | * @see Platform#getNativeIdMethod() |
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85 | */ |
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86 | public String getNativeIdMethod() |
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87 | { |
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88 | 0 | return Platform.IDENTITY; |
89 | } |
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90 | ||
91 | /** |
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92 | * @see Platform#hasScale(String) |
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93 | */ |
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94 | public boolean hasScale(String sqlType) |
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95 | { |
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96 | 0 | return "NUMERIC".equals(sqlType) || "DECIMAL".equals(sqlType); |
97 | } |
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98 | ||
99 | /** |
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100 | * @see Platform#hasSize(String) |
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101 | */ |
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102 | public boolean hasSize(String sqlType) |
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103 | { |
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104 | 0 | return "NUMERIC".equals(sqlType) || "DECIMAL".equals(sqlType) |
105 | || "VARCHAR".equals(sqlType) || "CHAR".equals(sqlType) |
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106 | || "BINARY".equals(sqlType) || "VARBINARY".equals(sqlType) |
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107 | || "BLOB".equals(sqlType) || "CLOB".equals(sqlType); |
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108 | } |
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109 | } |
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