svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.api / src / main / java / org / gvsig / expressionevaluator / spi / AbstractSymbolTable.java @ 44644
History | View | Annotate | Download (7.73 KB)
1 | 43983 | jjdelcerro | package org.gvsig.expressionevaluator.spi; |
---|---|---|---|
2 | |||
3 | import java.util.ArrayList; |
||
4 | import java.util.Collection; |
||
5 | import java.util.Collections; |
||
6 | import java.util.HashMap; |
||
7 | import java.util.HashSet; |
||
8 | import java.util.Iterator; |
||
9 | import java.util.List; |
||
10 | import java.util.Map; |
||
11 | import java.util.Set; |
||
12 | import org.apache.commons.lang3.StringUtils; |
||
13 | import org.gvsig.expressionevaluator.Function; |
||
14 | import org.gvsig.expressionevaluator.SymbolTable; |
||
15 | |||
16 | /**
|
||
17 | *
|
||
18 | * @author jjdelcerro
|
||
19 | */
|
||
20 | public abstract class AbstractSymbolTable implements SymbolTable { |
||
21 | |||
22 | private final String name; |
||
23 | |||
24 | 44533 | jjdelcerro | // public class ScriptFunction extends AbstractFunction {
|
25 | //
|
||
26 | // public ScriptFunction(String funcName) {
|
||
27 | // super("Script", funcName, Range.between(1, Integer.MAX_VALUE));
|
||
28 | // }
|
||
29 | //
|
||
30 | // @Override
|
||
31 | // public Object call(Interpreter interpreter, Object[] args) throws Exception {
|
||
32 | // for (Script script : scripts()) {
|
||
33 | // try {
|
||
34 | // return script.invokeFunction(this.name(), args);
|
||
35 | // } catch (NoSuchMethodException ex) {
|
||
36 | // // Si la funcion no existe en el script pasamos al siguiente
|
||
37 | // // script.
|
||
38 | // }
|
||
39 | // }
|
||
40 | // throw new NoSuchMethodException("Can't locate funcion '" + this.name() + "'.");
|
||
41 | // }
|
||
42 | //
|
||
43 | // }
|
||
44 | 43983 | jjdelcerro | |
45 | protected final List<SymbolTable> symbolTables; |
||
46 | protected Map<String, Object> vars; |
||
47 | protected Map<String, Function> functions; |
||
48 | 44139 | jjdelcerro | protected Map<String, Function> functionAlias; |
49 | 44533 | jjdelcerro | // protected List<Script> scripts;
|
50 | 43983 | jjdelcerro | |
51 | public AbstractSymbolTable() {
|
||
52 | this(null); |
||
53 | } |
||
54 | |||
55 | public AbstractSymbolTable(String name) { |
||
56 | this.name = name;
|
||
57 | this.symbolTables = new ArrayList<>(); |
||
58 | this.vars = null; |
||
59 | this.functions = null; |
||
60 | 44139 | jjdelcerro | this.functionAlias = null; |
61 | 44533 | jjdelcerro | // this.scripts = null;
|
62 | 43983 | jjdelcerro | } |
63 | |||
64 | @Override
|
||
65 | public String getName() { |
||
66 | return name;
|
||
67 | } |
||
68 | 43987 | jjdelcerro | |
69 | protected void addFunction(Function function) { |
||
70 | if (function == null) { |
||
71 | throw new IllegalArgumentException("function can't be null"); |
||
72 | } |
||
73 | this.getFunctions().put(function.name().toUpperCase(), function);
|
||
74 | 44139 | jjdelcerro | List<String> aliases = function.aliases(); |
75 | if( aliases == null || aliases.isEmpty() ) { |
||
76 | return;
|
||
77 | } |
||
78 | Map<String, Function> theFunctionAlias = this.getFunctionAlias(); |
||
79 | for (String alias : aliases) { |
||
80 | if( alias!=null ) { |
||
81 | theFunctionAlias.put(alias, function); |
||
82 | } |
||
83 | } |
||
84 | 43987 | jjdelcerro | } |
85 | 43983 | jjdelcerro | |
86 | @Override
|
||
87 | 44215 | jjdelcerro | public boolean addSymbolTable(SymbolTable symbolTable) { |
88 | 43983 | jjdelcerro | if (this.symbolTables.contains(symbolTable)) { |
89 | 44215 | jjdelcerro | return false; |
90 | 43983 | jjdelcerro | } |
91 | this.symbolTables.add(symbolTable);
|
||
92 | 44215 | jjdelcerro | return true; |
93 | 43983 | jjdelcerro | } |
94 | |||
95 | 44215 | jjdelcerro | @Override
|
96 | public boolean containsSymbolTable(SymbolTable symbolTable) { |
||
97 | return this.symbolTables.contains(symbolTable); |
||
98 | } |
||
99 | |||
100 | @Override
|
||
101 | public boolean removeSymbolTable(SymbolTable symbolTable) { |
||
102 | boolean n = this.symbolTables.remove(symbolTable); |
||
103 | return n;
|
||
104 | } |
||
105 | |||
106 | 43983 | jjdelcerro | protected Map<String, Object> getVars() { |
107 | if (this.vars == null) { |
||
108 | this.vars = new HashMap<>(); |
||
109 | } |
||
110 | return this.vars; |
||
111 | } |
||
112 | |||
113 | protected Map<String, Function> getFunctions() { |
||
114 | if (this.functions == null) { |
||
115 | this.functions = new HashMap<>(); |
||
116 | } |
||
117 | return this.functions; |
||
118 | } |
||
119 | |||
120 | 44139 | jjdelcerro | protected Map<String, Function> getFunctionAlias() { |
121 | if (this.functionAlias == null) { |
||
122 | this.functionAlias = new HashMap<>(); |
||
123 | } |
||
124 | return this.functionAlias; |
||
125 | } |
||
126 | |||
127 | 44533 | jjdelcerro | // protected List<Script> getScripts() {
|
128 | // if (this.scripts == null) {
|
||
129 | // this.scripts = new ArrayList<>();
|
||
130 | // }
|
||
131 | // return this.scripts;
|
||
132 | // }
|
||
133 | //
|
||
134 | 43983 | jjdelcerro | @Override
|
135 | public boolean exists(String name) { |
||
136 | if (StringUtils.isEmpty(name)) {
|
||
137 | return false; |
||
138 | } |
||
139 | if (this.vars != null) { |
||
140 | if (this.vars.containsKey(name.toUpperCase())) { |
||
141 | return true; |
||
142 | } |
||
143 | } |
||
144 | for (SymbolTable other : this.symbolTables) { |
||
145 | if (other.exists(name)) {
|
||
146 | return true; |
||
147 | } |
||
148 | } |
||
149 | return false; |
||
150 | } |
||
151 | |||
152 | @Override
|
||
153 | public Object value(String name) { |
||
154 | if (StringUtils.isEmpty(name)) {
|
||
155 | return null; |
||
156 | } |
||
157 | if (this.vars != null) { |
||
158 | name = name.toUpperCase(); |
||
159 | if (this.vars.containsKey(name)) { |
||
160 | return this.vars.get(name); |
||
161 | } |
||
162 | } |
||
163 | for (SymbolTable other : this.symbolTables) { |
||
164 | if (other.exists(name)) {
|
||
165 | return other.value(name);
|
||
166 | } |
||
167 | } |
||
168 | return null; |
||
169 | } |
||
170 | |||
171 | @Override
|
||
172 | public Function function(String name) { |
||
173 | if (StringUtils.isEmpty(name)) {
|
||
174 | return null; |
||
175 | } |
||
176 | if (this.functions != null) { |
||
177 | name = name.toUpperCase(); |
||
178 | if (this.functions.containsKey(name)) { |
||
179 | return this.functions.get(name); |
||
180 | } |
||
181 | } |
||
182 | 44139 | jjdelcerro | if (this.functionAlias != null) { |
183 | name = name.toUpperCase(); |
||
184 | if (this.functionAlias.containsKey(name)) { |
||
185 | return this.functionAlias.get(name); |
||
186 | } |
||
187 | } |
||
188 | 43983 | jjdelcerro | for (SymbolTable other : this.symbolTables) { |
189 | Function fn = other.function(name); |
||
190 | if (fn != null) { |
||
191 | 44533 | jjdelcerro | // if (fn instanceof ScriptFunction) {
|
192 | // continue;
|
||
193 | // }
|
||
194 | 43983 | jjdelcerro | return fn;
|
195 | } |
||
196 | } |
||
197 | 44533 | jjdelcerro | // if (this.scripts != null && ! this.scripts.isEmpty()) {
|
198 | // return new ScriptFunction(name);
|
||
199 | // }
|
||
200 | return null; |
||
201 | 43983 | jjdelcerro | } |
202 | |||
203 | @Override
|
||
204 | public Collection<String> variables() { |
||
205 | Set<String> theVars = new HashSet<>(); |
||
206 | for (SymbolTable symbolTable : this.symbolTables) { |
||
207 | theVars.addAll(symbolTable.variables()); |
||
208 | } |
||
209 | 44398 | jjdelcerro | theVars.addAll(this.localvariables());
|
210 | 43983 | jjdelcerro | return Collections.unmodifiableCollection(theVars); |
211 | } |
||
212 | |||
213 | @Override
|
||
214 | public Collection<Function> functions() { |
||
215 | Set<Function> theFunctions = new HashSet<>(); |
||
216 | for (SymbolTable symbolTable : this.symbolTables) { |
||
217 | theFunctions.addAll(symbolTable.functions()); |
||
218 | } |
||
219 | if (this.functions != null) { |
||
220 | theFunctions.addAll(this.functions.values());
|
||
221 | } |
||
222 | return Collections.unmodifiableCollection(theFunctions); |
||
223 | } |
||
224 | |||
225 | @Override
|
||
226 | 44338 | jjdelcerro | public Collection<Function> localfunctions() { |
227 | if( this.functions == null ) { |
||
228 | return Collections.EMPTY_LIST; |
||
229 | } |
||
230 | return Collections.unmodifiableCollection(this.functions.values()); |
||
231 | } |
||
232 | |||
233 | @Override
|
||
234 | 44340 | jjdelcerro | public Collection<String> localvariables() { |
235 | if( this.vars == null ) { |
||
236 | return Collections.EMPTY_LIST; |
||
237 | } |
||
238 | return Collections.unmodifiableCollection(this.vars.keySet()); |
||
239 | } |
||
240 | |||
241 | 44533 | jjdelcerro | // @Override
|
242 | // public Collection<Script> scripts() {
|
||
243 | // Set<Script> theScripts = new HashSet<>();
|
||
244 | // for (SymbolTable symbolTable : this.symbolTables) {
|
||
245 | // theScripts.addAll(symbolTable.scripts());
|
||
246 | // }
|
||
247 | // if (this.scripts != null) {
|
||
248 | // theScripts.addAll(this.scripts);
|
||
249 | // }
|
||
250 | // return Collections.unmodifiableCollection(theScripts);
|
||
251 | // }
|
||
252 | //
|
||
253 | 44340 | jjdelcerro | @Override
|
254 | 43983 | jjdelcerro | public Iterator<Function> iterator() { |
255 | return this.functions().iterator(); |
||
256 | } |
||
257 | |||
258 | @Override
|
||
259 | public SymbolTable clone() throws CloneNotSupportedException { |
||
260 | SymbolTable other = (SymbolTable) super.clone();
|
||
261 | return other;
|
||
262 | } |
||
263 | |||
264 | 44205 | jjdelcerro | @Override
|
265 | public boolean isSQLCompatible(String name) { |
||
266 | Function f = function(name); |
||
267 | if( f!=null ) { |
||
268 | return f.isSQLCompatible();
|
||
269 | } |
||
270 | return true; |
||
271 | } |
||
272 | |||
273 | 43983 | jjdelcerro | } |