Source Code Cross Referenced for DbObjectCache.java in  » Database-Client » SQL-Workbench » workbench » db » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » Database Client » SQL Workbench » workbench.db 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DbObjectCache.java
003:         *
004:         * This file is part of SQL Workbench/J, http://www.sql-workbench.net
005:         *
006:         * Copyright 2002-2008, Thomas Kellerer
007:         * No part of this code maybe reused without the permission of the author
008:         *
009:         * To contact the author please send an email to: support@sql-workbench.net
010:         *
011:         */
012:        package workbench.db;
013:
014:        import java.beans.PropertyChangeEvent;
015:        import java.beans.PropertyChangeListener;
016:        import java.util.Collections;
017:        import java.util.HashSet;
018:        import java.util.Iterator;
019:        import java.util.List;
020:        import java.util.Set;
021:        import java.util.SortedMap;
022:        import java.util.SortedSet;
023:        import java.util.TreeMap;
024:        import java.util.TreeSet;
025:        import workbench.log.LogMgr;
026:        import workbench.resource.Settings;
027:
028:        /**
029:         * A cache for database objects to support Auto-completion in the editor
030:         * @author  support@sql-workbench.net
031:         */
032:        public class DbObjectCache implements  PropertyChangeListener {
033:            private WbConnection dbConnection;
034:            private static final String NULL_SCHEMA = "$$wb-null-schema$$";
035:            private boolean retrieveOraclePublicSynonyms = false;
036:
037:            private Set<String> schemasInCache;
038:            private SortedMap<TableIdentifier, List<ColumnIdentifier>> objects;
039:
040:            DbObjectCache(WbConnection conn) {
041:                this .dbConnection = conn;
042:                this .createCache();
043:                retrieveOraclePublicSynonyms = conn.getMetadata().isOracle()
044:                        && Settings
045:                                .getInstance()
046:                                .getBoolProperty(
047:                                        "workbench.editor.autocompletion.oracle.public_synonyms",
048:                                        false);
049:                conn.addChangeListener(this );
050:            }
051:
052:            private void createCache() {
053:                schemasInCache = new HashSet<String>();
054:                objects = new TreeMap<TableIdentifier, List<ColumnIdentifier>>();
055:            }
056:
057:            /**
058:             * Add this list of tables to the current cache. 
059:             */
060:            private void setTables(List<TableIdentifier> tables) {
061:                for (TableIdentifier tbl : tables) {
062:                    if (!this .objects.containsKey(tbl)) {
063:                        this .objects.put(tbl, null);
064:                    }
065:                }
066:            }
067:
068:            public Set<TableIdentifier> getTables() {
069:                return getTables(null, null);
070:            }
071:
072:            public Set<TableIdentifier> getTables(String schema) {
073:                return getTables(schema, null);
074:            }
075:
076:            private String getSchemaToUse(String schema) {
077:                DbMetadata meta = this .dbConnection.getMetadata();
078:                return meta.adjustSchemaNameCase(schema);
079:            }
080:
081:            /**
082:             * Get the tables (and views) the are currently in the cache
083:             */
084:            public Set<TableIdentifier> getTables(String schema, String type) {
085:                String schemaToUse = getSchemaToUse(schema);
086:                if (this .objects.size() == 0
087:                        || (!schemasInCache
088:                                .contains(schemaToUse == null ? NULL_SCHEMA
089:                                        : schemaToUse))) {
090:                    try {
091:                        DbMetadata meta = this .dbConnection.getMetadata();
092:                        List<TableIdentifier> tables = meta
093:                                .getSelectableObjectsList(schemaToUse);
094:                        this .setTables(tables);
095:                        this .schemasInCache.add(schema == null ? NULL_SCHEMA
096:                                : schemaToUse);
097:                    } catch (Exception e) {
098:                        LogMgr.logError("DbObjectCache.getTables()",
099:                                "Could not retrieve table list", e);
100:                    }
101:                }
102:                if (type != null)
103:                    return filterTablesByType(schemaToUse, type);
104:                else
105:                    return filterTablesBySchema(schemaToUse);
106:            }
107:
108:            private Set<TableIdentifier> filterTablesByType(String schema,
109:                    String type) {
110:                this .getTables(schema);
111:                String schemaToUse = getSchemaToUse(schema);
112:                SortedSet<TableIdentifier> result = new TreeSet<TableIdentifier>(
113:                        new TableNameComparator());
114:                for (TableIdentifier tbl : objects.keySet()) {
115:                    String ttype = tbl.getType();
116:                    String tSchema = tbl.getSchema();
117:                    if (type.equalsIgnoreCase(ttype)
118:                            && ((schemaToUse == null
119:                                    || schemaToUse.equalsIgnoreCase(tSchema)
120:                                    || tSchema == null || "public"
121:                                    .equalsIgnoreCase(tSchema)))) {
122:                        TableIdentifier copy = tbl.createCopy();
123:                        if (tSchema != null && tSchema.equals(tbl.getSchema()))
124:                            copy.setSchema(null);
125:                        result.add(copy);
126:                    }
127:                }
128:                return result;
129:            }
130:
131:            private Set<TableIdentifier> filterTablesBySchema(String schema) {
132:                SortedSet<TableIdentifier> result = new TreeSet<TableIdentifier>(
133:                        new TableNameComparator());
134:                DbMetadata meta = this .dbConnection.getMetadata();
135:                String schemaToUse = getSchemaToUse(schema);
136:                for (TableIdentifier tbl : objects.keySet()) {
137:                    String tSchema = tbl.getSchema();
138:                    if (schemaToUse == null || meta.ignoreSchema(tSchema)
139:                            || schemaToUse.equalsIgnoreCase(tSchema)) {
140:                        TableIdentifier copy = tbl.createCopy();
141:                        copy.setSchema(null);
142:                        String cat = copy.getCatalog();
143:                        if (meta.ignoreCatalog(cat))
144:                            copy.setCatalog(null);
145:                        result.add(copy);
146:                    }
147:                }
148:                return result;
149:            }
150:
151:            /**
152:             * Return the columns for the given table
153:             * @return a List with {@link workbench.db.ColumnIdentifier} objects
154:             */
155:            public List<ColumnIdentifier> getColumns(TableIdentifier tbl) {
156:                String schema = getSchemaToUse(tbl.getSchema());
157:
158:                if (this .objects.size() == 0
159:                        || !schemasInCache
160:                                .contains(schema == null ? NULL_SCHEMA : schema)) {
161:                    this .getTables(schema);
162:                }
163:
164:                List<ColumnIdentifier> cols = this .objects.get(tbl);
165:
166:                TableIdentifier t2 = null;
167:
168:                // if we didn't find an entry with the schema in the table, try
169:                // to find a table with that name but without the schema
170:                // (this is to support oracle public synonyms/objects)
171:                if (tbl.getSchema() != null && cols == null) {
172:                    if (!this .objects.containsKey(tbl)) {
173:                        t2 = tbl.createCopy();
174:                        t2.setSchema(null);
175:                        t2.setType(null);
176:                        cols = this .objects.get(t2);
177:                        if (cols == null && retrieveOraclePublicSynonyms) {
178:                            // retrieve Oracle PUBLIC synonyms
179:                            this .getTables("PUBLIC");
180:                            cols = this .objects.get(t2);
181:                        }
182:                    }
183:                }
184:
185:                if (cols == null || cols == Collections.EMPTY_LIST) {
186:                    TableIdentifier tblToUse = null;
187:
188:                    // use the stored key because that might carry the correct type attribute
189:                    // TabelIdentifier.equals() doesn't compare the type, only the expression
190:                    // so we'll get a containsKey() == true even if the type is different
191:                    // (which is necessary because the TableIdentifier passed to this 
192:                    // method will never contain a type!)
193:                    if (objects.containsKey(tbl)) {
194:                        tblToUse = findKey(tbl);
195:                    } else if (t2 != null && objects.containsKey(t2)) {
196:                        tblToUse = findKey(t2);
197:                    } else {
198:                        tblToUse = this .dbConnection.getMetadata().findTable(
199:                                tbl);
200:                    }
201:
202:                    try {
203:                        cols = this .dbConnection.getMetadata().getTableColumns(
204:                                tblToUse);
205:                        Collections.sort(cols);
206:                    } catch (Throwable e) {
207:                        LogMgr.logError("DbObjectCache.getColumns",
208:                                "Error retrieving columns for " + tblToUse, e);
209:                        cols = null;
210:                    }
211:                    this .objects.put(tblToUse, cols);
212:
213:                }
214:                return Collections.unmodifiableList(cols);
215:            }
216:
217:            /**
218:             * Return the stored key according to the passed
219:             * TableIdentifier. The stored key might carry additional
220:             * properties that the passed key does not have (even 
221:             * though they are equal)
222:             */
223:            private TableIdentifier findKey(TableIdentifier key) {
224:                if (key == null)
225:                    return null;
226:                Iterator itr = this .objects.keySet().iterator();
227:                while (itr.hasNext()) {
228:                    TableIdentifier tbl = (TableIdentifier) itr.next();
229:                    if (key.equals(tbl))
230:                        return tbl;
231:                }
232:                return null;
233:            }
234:
235:            /**
236:             * Disposes any db objects held in the cache
237:             */
238:            public void clear() {
239:                if (this .objects != null)
240:                    this .objects.clear();
241:                this .schemasInCache.clear();
242:            }
243:
244:            /**
245:             * Notification about the state of the connection. If the connection
246:             * is closed, we can dispose the object cache
247:             */
248:            public void propertyChange(PropertyChangeEvent evt) {
249:                if (WbConnection.PROP_CONNECTION_STATE.equals(evt
250:                        .getPropertyName())
251:                        && WbConnection.CONNECTION_CLOSED.equals(evt
252:                                .getNewValue())) {
253:                    this.clear();
254:                }
255:            }
256:
257:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.