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1
10
11 package org.mmbase.bridge.implementation;
12
13 import javax.servlet.*;
14 import java.util.*;
15 import org.mmbase.bridge.*;
16 import org.mmbase.bridge.util.*;
17 import org.mmbase.datatypes.*;
18 import org.mmbase.core.CoreField;
19 import org.mmbase.core.util.Fields;
20 import org.mmbase.module.core.*;
21 import org.mmbase.storage.search.*;
22 import org.mmbase.util.logging.*;
23 import org.mmbase.util.LocalizedString;
24
25
35 public class VirtualNodeManager extends AbstractNodeManager implements NodeManager {
36 private static final Logger log = Logging.getLoggerInstance(VirtualNodeManager.class);
37
38 private static final boolean allowNonQueriedFields = true;
40 final protected Map fieldTypes = new HashMap();
42
43 final MMObjectBuilder builder;
44 private SearchQuery query;
45
46
49 VirtualNodeManager(org.mmbase.module.core.VirtualNode node, Cloud cloud) {
50 super(cloud);
51 if (node.getBuilder() instanceof VirtualBuilder) {
53 VirtualBuilder virtualBuilder = (VirtualBuilder) node.getBuilder();;
54 Map fields = virtualBuilder.getFields(node);
55 Iterator i = fields.entrySet().iterator();
56 while (i.hasNext()) {
57 Map.Entry entry = (Map.Entry) i.next();
58 String  fieldName = (String ) entry.getKey();
59 CoreField fd = (CoreField) entry.getValue();
60 Field ft = new BasicField(fd, this);
61 fieldTypes.put(fieldName, ft);
62 }
63 builder = null;
64 setStringValue("name", "virtual builder");
65 setStringValue("description", "virtual builder");
66 } else {
67 builder = node.getBuilder();
68 BasicNodeManager.sync(builder, fieldTypes, this);
69 }
70 }
71
72
75 VirtualNodeManager(Query query, Cloud cloud) {
76 super(cloud);
77 if (query instanceof NodeQuery) {
78 builder = BasicCloudContext.mmb.getBuilder(((NodeQuery) query).getNodeManager().getName());
79 BasicNodeManager.sync(builder, fieldTypes, this);
80 } else {
81 builder = null;
82 if (log.isDebugEnabled()) {
83 log.debug("Creating NodeManager for " + query.toSql());
84 }
85 this.query = query; setStringValue("name", "cluster builder");
88 setStringValue("description", "cluster builder");
89 }
90
91 }
92
93
99 protected Map getFieldTypes() {
100 if (builder != null) {
101 return fieldTypes;
102 } else {
103 if (query != null) { Iterator steps = query.getSteps().iterator();
106 while (steps.hasNext()) {
107 Step step = (Step) steps.next();
108 DataType nodeType = DataTypes.getDataType("node");
109 String name = step.getAlias();
110 if (name == null) name = step.getTableName();
111 CoreField fd = Fields.createField(name, Field.TYPE_NODE, Field.TYPE_UNKNOWN, Field.STATE_VIRTUAL, nodeType);
112 fd.finish();
113 Field ft = new VirtualNodeManagerField(fd, name);
114 fieldTypes.put(name, ft);
115
116 if (allowNonQueriedFields && ! query.isAggregating()) {
117 FieldIterator fields = cloud.getNodeManager(step.getTableName()).getFields().fieldIterator();
119 while (fields.hasNext()) {
120 Field f = fields.nextField();
121 final String fieldName = name + "." + f.getName();
122 fieldTypes.put(fieldName, new VirtualNodeManagerField(f, fieldName));
123 }
124 }
125 }
126 if (! allowNonQueriedFields || query.isAggregating()) {
127 Iterator fields = query.getFields().iterator();
129 while(fields.hasNext()) {
130 StepField field = (StepField) fields.next();
131 Step step = field.getStep();
132 Field f = cloud.getNodeManager(step.getTableName()).getField(field.getFieldName());
133 String name = field.getAlias();
134 if (name == null) {
135 name = step.getAlias();
136 if (name == null) name = step.getTableName();
137 name += "." + field.getFieldName();
138 }
139 final String fieldName = name;
140 fieldTypes.put(name, new VirtualNodeManagerField(f, fieldName));
141
142 }
143 }
144 query = null;
145 }
146 return fieldTypes;
147 }
148 }
149
150
151
152 public String getGUIName(int plurality, Locale locale) {
153 if (locale == null) locale = cloud.getLocale();
154 if (builder != null) {
155 if (plurality == NodeManager.GUI_SINGULAR) {
156 return builder.getSingularName(locale.getLanguage());
157 } else {
158 return builder.getPluralName(locale.getLanguage());
159 }
160 } else {
161 return getName();
162 }
163 }
164
165 public String getName() {
166 return builder == null ? getStringValue("name") : builder.getTableName();
167 }
168 public String getDescription() {
169 return getDescription(null);
170 }
171
172 public String getDescription(Locale locale) {
173 if (builder == null) return getStringValue("description");
174 if (locale == null) locale = cloud.getLocale();
175 return builder.getDescription(locale.getLanguage());
176 }
177
178
180 private class VirtualNodeManagerField extends FieldWrapper {
181
182 private final String name;
183 VirtualNodeManagerField(Field field, String name) {
184 super(field);
185 this.name = name;
186 }
187 public NodeManager getNodeManager() {
188 return VirtualNodeManager.this;
189 }
190 public String getName() {
191 return name;
192 }
193 }
194
195 }
196 |
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