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1 package org.hibernate.loader;
2
3 import java.util.Map  ;
4
5 import org.hibernate.persister.entity.Loadable;
6 import org.hibernate.util.CollectionHelper;
7
8
15 public class DefaultEntityAliases implements EntityAliases {
16
17 private final String [] suffixedKeyColumns;
18 private final String [] suffixedVersionColumn;
19 private final String [][] suffixedPropertyColumns;
20 private final String suffixedDiscriminatorColumn;
21 private final String suffix;
22 private final String rowIdAlias;
23 private final Map userProvidedAliases;
24
25 public DefaultEntityAliases(Loadable persister, String suffix) {
26 this(CollectionHelper.EMPTY_MAP, persister, suffix);
27 }
28
29
33 public DefaultEntityAliases(Map userProvidedAliases, Loadable persister, String suffix) {
34 this.suffix = suffix;
35 this.userProvidedAliases = userProvidedAliases;
36
37 String [] keyColumnsCandidates = getUserProvidedAliases(
38 persister.getIdentifierPropertyName(),
39 (String []) null
40 );
41 if (keyColumnsCandidates==null) {
42 suffixedKeyColumns = getUserProvidedAliases(
43 "id",
44 getIdentifierAliases(persister, suffix)
45 );
46 }
47 else {
48 suffixedKeyColumns = keyColumnsCandidates;
49 }
50 intern(suffixedKeyColumns);
51
52 suffixedPropertyColumns = getSuffixedPropertyAliases(persister);
53 suffixedDiscriminatorColumn = getUserProvidedAlias(
54 "class",
55 getDiscriminatorAlias(persister, suffix)
56 );
57 if ( persister.isVersioned() ) {
58 suffixedVersionColumn = suffixedPropertyColumns[ persister.getVersionProperty() ];
59 }
60 else {
61 suffixedVersionColumn = null;
62 }
63 rowIdAlias = Loadable.ROWID_ALIAS + suffix; }
65
66 protected String getDiscriminatorAlias(Loadable persister, String suffix) {
67 return persister.getDiscriminatorAlias(suffix);
68 }
69
70 protected String [] getIdentifierAliases(Loadable persister, String suffix) {
71 return persister.getIdentifierAliases(suffix);
72 }
73
74 protected String [] getPropertyAliases(Loadable persister, int j) {
75 return persister.getPropertyAliases(suffix, j);
76 }
77
78 private String [] getUserProvidedAliases(String propertyPath, String [] defaultAliases) {
79 String [] result = (String []) userProvidedAliases.get(propertyPath);
80 if (result==null) {
81 return defaultAliases;
82 }
83 else {
84 return result;
85 }
86 }
87
88 private String getUserProvidedAlias(String propertyPath, String defaultAlias) {
89 String [] columns = (String []) userProvidedAliases.get(propertyPath);
90 if (columns==null) {
91 return defaultAlias;
92 }
93 else {
94 return columns[0];
95 }
96 }
97
98 public String [][] getSuffixedPropertyAliases(Loadable persister) {
99 int size = persister.getPropertyNames().length;
100 String [][] suffixedPropertyAliases = new String [size][];
101 for ( int j = 0; j < size; j++ ) {
102 suffixedPropertyAliases[j] = getUserProvidedAliases(
103 persister.getPropertyNames()[j],
104 getPropertyAliases(persister, j)
105 );
106 intern( suffixedPropertyAliases[j] );
107 }
108 return suffixedPropertyAliases;
109 }
110
111 public String [] getSuffixedVersionAliases() {
112 return suffixedVersionColumn;
113 }
114
115 public String [][] getSuffixedPropertyAliases() {
116 return suffixedPropertyColumns;
117 }
118
119 public String getSuffixedDiscriminatorAlias() {
120 return suffixedDiscriminatorColumn;
121 }
122
123 public String [] getSuffixedKeyAliases() {
124 return suffixedKeyColumns;
125 }
126
127 public String getRowIdAlias() {
128 return rowIdAlias;
129 }
130
131 private static void intern(String [] strings) {
132 for (int i=0; i<strings.length; i++ ) {
133 strings[i] = strings[i].intern();
134 }
135 }
136
137 }
138 |
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