svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultExpressionEvaluatorManager.java @ 44769
History | View | Annotate | Download (15.9 KB)
1 |
package org.gvsig.expressionevaluator.impl; |
---|---|
2 |
|
3 |
import java.io.StringWriter; |
4 |
import java.net.URI; |
5 |
import java.util.ArrayList; |
6 |
import org.gvsig.expressionevaluator.Grammar; |
7 |
import org.gvsig.expressionevaluator.GrammarFactory; |
8 |
import java.util.Collection; |
9 |
import java.util.Collections; |
10 |
import java.util.HashMap; |
11 |
import java.util.List; |
12 |
import java.util.Map; |
13 |
import java.util.Objects; |
14 |
import java.util.regex.Matcher; |
15 |
import java.util.regex.Pattern; |
16 |
import org.apache.commons.io.FilenameUtils; |
17 |
import org.apache.commons.io.IOUtils; |
18 |
import org.apache.commons.lang3.ArrayUtils; |
19 |
import org.apache.commons.lang3.StringUtils; |
20 |
import org.gvsig.expressionevaluator.Code; |
21 |
import org.gvsig.expressionevaluator.CodeBuilder; |
22 |
import org.gvsig.expressionevaluator.Expression; |
23 |
import org.gvsig.expressionevaluator.ExpressionBuilder; |
24 |
import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
25 |
import org.gvsig.expressionevaluator.Interpreter; |
26 |
import org.gvsig.expressionevaluator.LexicalAnalyzer; |
27 |
import org.gvsig.expressionevaluator.MutableSymbolTable; |
28 |
import org.gvsig.expressionevaluator.Optimizer; |
29 |
import org.gvsig.expressionevaluator.SymbolTable; |
30 |
import org.gvsig.expressionevaluator.SymbolTableFactory; |
31 |
import org.gvsig.expressionevaluator.Compiler; |
32 |
import org.gvsig.expressionevaluator.Formatter; |
33 |
import org.gvsig.expressionevaluator.GrammarSet; |
34 |
import org.gvsig.expressionevaluator.ReprMethod; |
35 |
import org.gvsig.expressionevaluator.impl.repr.ReprNull; |
36 |
import org.gvsig.expressionevaluator.impl.repr.ReprObject; |
37 |
import org.gvsig.expressionevaluator.spi.formatter.value.BaseFormatter; |
38 |
import org.gvsig.tools.bookmarksandhistory.Bookmarks; |
39 |
import org.gvsig.tools.bookmarksandhistory.History; |
40 |
import org.gvsig.tools.bookmarksandhistory.impl.BaseBookmarks; |
41 |
import org.gvsig.tools.bookmarksandhistory.impl.BaseHistory; |
42 |
import org.gvsig.tools.resourcesstorage.ResourcesStorage; |
43 |
import org.gvsig.tools.script.Script; |
44 |
import org.slf4j.Logger; |
45 |
import org.slf4j.LoggerFactory; |
46 |
|
47 |
|
48 |
@SuppressWarnings("UseSpecificCatch") |
49 |
public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
50 |
|
51 |
private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExpressionEvaluatorManager.class); |
52 |
|
53 |
private Double accuracy; |
54 |
private final Map<String,SymbolTableFactory>symbolTableFactories; |
55 |
private final Map<String,GrammarFactory> grammarFactories; |
56 |
private Bookmarks<Expression> bookmarks; |
57 |
private History<Expression> history; |
58 |
private SymbolTable inmutableSymbolTable;
|
59 |
private ResourcesStorage scriptsResourcesStorage;
|
60 |
private List<ClassLoader> loaders; |
61 |
private Formatter<ExpressionBuilder.Value> expressionBuilderFormatter; |
62 |
|
63 |
public DefaultExpressionEvaluatorManager() {
|
64 |
this.symbolTableFactories = new HashMap<>(); |
65 |
this.grammarFactories = new HashMap<>(); |
66 |
this.loaders = new ArrayList<>(); |
67 |
this.scriptsResourcesStorage = ResourcesStorage.EMPTY_RESOURCESSTORAGE;
|
68 |
this.loaders.add(this.getClass().getClassLoader()); |
69 |
this.expressionBuilderFormatter = new BaseFormatter(); |
70 |
} |
71 |
|
72 |
@Override
|
73 |
public SymbolTable getSymbolTable(String name) { |
74 |
if( name == null ) { |
75 |
return null; |
76 |
} |
77 |
SymbolTableFactory factory = this.symbolTableFactories.get(name.toUpperCase());
|
78 |
if( factory == null ) { |
79 |
return null; |
80 |
} |
81 |
return factory.create();
|
82 |
} |
83 |
|
84 |
@Override
|
85 |
public Collection<SymbolTableFactory> getSymbolTableFactories() { |
86 |
return this.symbolTableFactories.values(); |
87 |
} |
88 |
|
89 |
@Override
|
90 |
public final void registerSymbolTable(SymbolTableFactory factory) { |
91 |
if( factory == null ) { |
92 |
throw new IllegalArgumentException("factory can't be null"); |
93 |
} |
94 |
this.symbolTableFactories.put(factory.getName().toUpperCase(),factory);
|
95 |
this.inmutableSymbolTable = null; |
96 |
} |
97 |
|
98 |
@Override
|
99 |
public SymbolTable getInmutableSymbolTable() {
|
100 |
if( this.inmutableSymbolTable==null ) { |
101 |
this.inmutableSymbolTable = new InmutableSymbolTable(); |
102 |
} |
103 |
return this.inmutableSymbolTable; |
104 |
} |
105 |
|
106 |
@Override
|
107 |
public Object evaluate(String source) { |
108 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
109 |
DefaultCompiler compiler = new DefaultCompiler(this); |
110 |
Code code = compiler.compileExpression(source); |
111 |
return interpreter.run(code);
|
112 |
} |
113 |
|
114 |
@Override
|
115 |
public Object evaluate(SymbolTable symbolTable, String source) { |
116 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
117 |
DefaultCompiler compiler = new DefaultCompiler(this); |
118 |
Code code = compiler.compileExpression(source); |
119 |
if( symbolTable!=null ) { |
120 |
interpreter.setSymbolTable(symbolTable); |
121 |
} |
122 |
return interpreter.run(code);
|
123 |
} |
124 |
|
125 |
@Override
|
126 |
public Object evaluate(SymbolTable symbolTable, Code code) { |
127 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
128 |
if( symbolTable!=null ) { |
129 |
interpreter.setSymbolTable(symbolTable); |
130 |
} |
131 |
return interpreter.run(code);
|
132 |
} |
133 |
|
134 |
@Override
|
135 |
public String evaluateDynamicText(String source) { |
136 |
return evaluateDynamicText(null, source); |
137 |
} |
138 |
|
139 |
@Override
|
140 |
public boolean isDynamicText(String source) { |
141 |
String[] sources = StringUtils.substringsBetween(source, "<%", "%>"); |
142 |
if( ArrayUtils.isEmpty(sources) ) {
|
143 |
return false; |
144 |
} |
145 |
return true; |
146 |
} |
147 |
|
148 |
@Override
|
149 |
public String evaluateDynamicText(SymbolTable symbolTable, String source) { |
150 |
String[] sources = StringUtils.substringsBetween(source, "<%", "%>"); |
151 |
if( ArrayUtils.isEmpty(sources) ) {
|
152 |
return source;
|
153 |
} |
154 |
String[] values = new String[sources.length]; |
155 |
|
156 |
DefaultInterpreter interpreter = new DefaultInterpreter();
|
157 |
if( symbolTable!=null ) { |
158 |
interpreter.setSymbolTable(symbolTable); |
159 |
} |
160 |
StringWriter writer = new StringWriter(); |
161 |
interpreter.setWriter(writer); |
162 |
DefaultCompiler compiler = new DefaultCompiler(this); |
163 |
for (int i = 0; i < sources.length; i++) { |
164 |
String theSource = sources[i];
|
165 |
if( StringUtils.startsWith(theSource, "=") ) { |
166 |
Code code = compiler.compileExpression(theSource.substring(1));
|
167 |
Object value = interpreter.run(code);
|
168 |
values[i] = Objects.toString(value, "");
|
169 |
} else {
|
170 |
Code code = compiler.compileExpression(theSource.substring(1));
|
171 |
writer.getBuffer().setLength(0);
|
172 |
interpreter.run(code); |
173 |
values[i] = writer.toString(); |
174 |
} |
175 |
sources[i] = "<%"+sources[i]+"%>"; |
176 |
} |
177 |
String output = StringUtils.replaceEach(source, sources, values);
|
178 |
return output;
|
179 |
} |
180 |
|
181 |
@Override
|
182 |
public Code compile(String source) { |
183 |
Compiler compiler = this.createCompiler(); |
184 |
return compiler.compileExpression(source);
|
185 |
} |
186 |
|
187 |
@Override
|
188 |
public Code compile(LexicalAnalyzer lex, String source) { |
189 |
Compiler compiler = this.createCompiler(); |
190 |
compiler.setLexicalAnalyzer(lex); |
191 |
return compiler.compileExpression(source);
|
192 |
} |
193 |
|
194 |
@Override
|
195 |
public Code optimize(SymbolTable symbolTable, Code code) {
|
196 |
Optimizer optimizer = this.createOptimizer();
|
197 |
return optimizer.optimize(symbolTable, code);
|
198 |
} |
199 |
|
200 |
@Override
|
201 |
public MutableSymbolTable createSymbolTable() {
|
202 |
DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
|
203 |
return theSymbolTable;
|
204 |
} |
205 |
|
206 |
public void populateSymbolTable(SymbolTable aSymbolTable) { |
207 |
for (SymbolTableFactory factory : this.getSymbolTableFactories() ) { |
208 |
try {
|
209 |
if( factory.isAutoload() ) {
|
210 |
SymbolTable symbolTable = factory.create(); |
211 |
aSymbolTable.addSymbolTable(symbolTable); |
212 |
} |
213 |
} catch(Throwable th) { |
214 |
String factoryName = "Unknown"; |
215 |
try {
|
216 |
factoryName = factory.getName(); |
217 |
} catch(Throwable th2) { |
218 |
// Do nothing
|
219 |
} |
220 |
LOGGER.warn("Can't create symbol table '"+factoryName+"'.", th); |
221 |
} |
222 |
} |
223 |
} |
224 |
|
225 |
@Override
|
226 |
public LexicalAnalyzer createLexicalAnalyzer() {
|
227 |
return new SQLLexicalAnalyzer(); |
228 |
} |
229 |
|
230 |
@Override
|
231 |
public CodeBuilder createCodeBuilder() {
|
232 |
return new DefaultCodeBuilder(this); |
233 |
} |
234 |
|
235 |
@Override
|
236 |
public Compiler createCompiler() { |
237 |
DefaultCompiler compiler = new DefaultCompiler(this); |
238 |
this.populateGrammars(compiler);
|
239 |
return compiler;
|
240 |
} |
241 |
|
242 |
@Override
|
243 |
public Interpreter createInterpreter() {
|
244 |
Interpreter interpreter = new DefaultInterpreter();
|
245 |
interpreter.setResourcesStorage(this.scriptsResourcesStorage);
|
246 |
return interpreter;
|
247 |
} |
248 |
|
249 |
@Override
|
250 |
public Double getAccuracy() { |
251 |
return this.accuracy; |
252 |
} |
253 |
|
254 |
@Override
|
255 |
public void setAccuracy(Double accuracy) { |
256 |
this.accuracy = accuracy;
|
257 |
} |
258 |
|
259 |
@Override
|
260 |
public Expression createExpression() { |
261 |
DefaultExpression e = new DefaultExpression(this); |
262 |
return e;
|
263 |
} |
264 |
|
265 |
@Override
|
266 |
public ExpressionBuilder createExpressionBuilder() {
|
267 |
ExpressionBuilder x = new DefaultExpressionBuilder(this); |
268 |
return x;
|
269 |
} |
270 |
|
271 |
@Override
|
272 |
public Optimizer createOptimizer() {
|
273 |
Optimizer x = new DefaultOptimizer(this); |
274 |
return x;
|
275 |
} |
276 |
|
277 |
@Override
|
278 |
public void registerGrammar(GrammarFactory factory) { |
279 |
if( factory==null ) { |
280 |
throw new IllegalArgumentException("factory can't be null"); |
281 |
} |
282 |
this.grammarFactories.put(factory.getName(), factory);
|
283 |
} |
284 |
|
285 |
@Override
|
286 |
public Collection<GrammarFactory> getGrammarFactories() { |
287 |
return this.grammarFactories.values(); |
288 |
} |
289 |
|
290 |
public void populateGrammars(Compiler compiler) { |
291 |
GrammarSet grammarSet = compiler.getGrammars(); |
292 |
for (GrammarFactory factory : this.getGrammarFactories() ) { |
293 |
if( factory.isAutoload() ) {
|
294 |
Grammar grammar = factory.create(); |
295 |
grammarSet.add(grammar); |
296 |
} |
297 |
} |
298 |
} |
299 |
|
300 |
@Override
|
301 |
public Grammar createGrammar(String name) { |
302 |
DefaultGrammar grammar = new DefaultGrammar(name);
|
303 |
return grammar;
|
304 |
} |
305 |
|
306 |
@Override
|
307 |
public Bookmarks<Expression> getBookmarks() { |
308 |
if( this.bookmarks==null ) { |
309 |
this.bookmarks = new BaseBookmarks<>(); |
310 |
} |
311 |
return this.bookmarks; |
312 |
} |
313 |
|
314 |
@Override
|
315 |
public History<Expression> getHistory() { |
316 |
if( this.history==null ) { |
317 |
this.history = new BaseHistory<>(20); |
318 |
} |
319 |
return this.history; |
320 |
} |
321 |
|
322 |
@Override
|
323 |
public Script createScript(String name, String code, String languaje) { |
324 |
SimpleScript sc = new SimpleScript(this.createInterpreter(), name, code); |
325 |
return sc;
|
326 |
} |
327 |
|
328 |
@Override
|
329 |
public Script locateScript(String name) { |
330 |
return loadScript(this.scriptsResourcesStorage, name); |
331 |
} |
332 |
|
333 |
@Override
|
334 |
public Script loadScript(final URI location) { |
335 |
ResourcesStorage.Resource res = null;
|
336 |
try {
|
337 |
if( location==null ) { |
338 |
return null; |
339 |
} |
340 |
String resourceName = FilenameUtils.getBaseName(location.getPath());
|
341 |
res = ResourcesStorage.createResource(resourceName, location); |
342 |
if( res == null || !res.exists() ) { |
343 |
return null; |
344 |
} |
345 |
Script script = loadScript(res, resourceName); |
346 |
return script;
|
347 |
} catch (Exception ex) { |
348 |
LOGGER.warn("Can't load script from URI.", ex);
|
349 |
return null; |
350 |
} finally {
|
351 |
IOUtils.closeQuietly(res); |
352 |
} |
353 |
} |
354 |
|
355 |
|
356 |
@Override
|
357 |
public Script loadScript(ResourcesStorage storage, String name) { |
358 |
ResourcesStorage.Resource res = null;
|
359 |
try {
|
360 |
if( storage==null ) { |
361 |
return null; |
362 |
} |
363 |
res = storage.getResource(name); |
364 |
if( res == null || !res.exists() ) { |
365 |
return null; |
366 |
} |
367 |
Script script = loadScript(res, name); |
368 |
return script;
|
369 |
} catch (Exception ex) { |
370 |
LOGGER.warn("Can't load script from resources storage.", ex);
|
371 |
return null; |
372 |
} finally {
|
373 |
IOUtils.closeQuietly(res); |
374 |
} |
375 |
|
376 |
} |
377 |
|
378 |
private static final Pattern RE_LANG = Pattern.compile(".*lang[:]\\s*([a-zA-Z_][a-zA-Z_0-9_]*).*"); |
379 |
private static final Pattern RE_ENCODING = Pattern.compile(".*encoding[:]\\s*([a-zA-Z_][a-zA-Z0-9_-]*).*"); |
380 |
|
381 |
private Script loadScript(ResourcesStorage.Resource res, String name) { |
382 |
try {
|
383 |
if( res == null || !res.exists() ) { |
384 |
return null; |
385 |
} |
386 |
byte[] head_bytes = new byte[500]; |
387 |
IOUtils.read(res.asInputStream(), head_bytes); |
388 |
IOUtils.closeQuietly(res); |
389 |
String head = new String(head_bytes); |
390 |
if( StringUtils.isEmpty(head) ) {
|
391 |
return null; |
392 |
} |
393 |
head = StringUtils.split(head, "\n")[0]; |
394 |
|
395 |
String lang = "cosa"; |
396 |
String encoding = null; |
397 |
Matcher m = RE_LANG.matcher(head);
|
398 |
if( m!=null && m.matches() && m.groupCount()==1 ) { |
399 |
String s = m.group(1); |
400 |
if( !StringUtils.isBlank(s) ) {
|
401 |
lang = s; |
402 |
} |
403 |
} |
404 |
m = RE_ENCODING.matcher(head); |
405 |
if( m!=null && m.matches() && m.groupCount()==1 ) { |
406 |
String s = m.group(1); |
407 |
if( !StringUtils.isBlank(s) ) {
|
408 |
encoding = s; |
409 |
} |
410 |
} |
411 |
|
412 |
String source;
|
413 |
if( StringUtils.isBlank(encoding) ) {
|
414 |
source = IOUtils.toString(res.asInputStream()); |
415 |
} else {
|
416 |
source = IOUtils.toString(res.asInputStream(), encoding); |
417 |
} |
418 |
Script script = this.createScript(name, source, lang);
|
419 |
return script;
|
420 |
} catch (Exception ex) { |
421 |
LOGGER.warn("Can't load script from resource.", ex);
|
422 |
return null; |
423 |
} finally {
|
424 |
IOUtils.closeQuietly(res); |
425 |
} |
426 |
|
427 |
} |
428 |
|
429 |
@Override
|
430 |
public ResourcesStorage getScriptsResourcesStorage() {
|
431 |
return this.scriptsResourcesStorage; |
432 |
} |
433 |
|
434 |
@Override
|
435 |
public void setScriptsResourcesStorage(ResourcesStorage scriptsResourcesStorage) { |
436 |
this.scriptsResourcesStorage = scriptsResourcesStorage;
|
437 |
} |
438 |
|
439 |
|
440 |
private final List<ReprMethod> reprMethods = new ArrayList<>(); |
441 |
private final Map<Class,ReprMethod> reprMethodsCache = new HashMap<>(); |
442 |
private final ReprMethod reprNull = new ReprNull(); |
443 |
private final ReprMethod reprObject = new ReprObject(); |
444 |
|
445 |
@Override
|
446 |
public void addReprMethod(ReprMethod method) { |
447 |
this.reprMethods.add(method);
|
448 |
this.reprMethodsCache.clear();
|
449 |
} |
450 |
|
451 |
@Override
|
452 |
public ReprMethod getReprMethod(Object value) { |
453 |
if( value == null ) { |
454 |
return this.reprNull; |
455 |
} |
456 |
ReprMethod method = this.reprMethodsCache.get(value.getClass());
|
457 |
if( method!=null ) { |
458 |
return method;
|
459 |
} |
460 |
for (ReprMethod theMethod : reprMethods) {
|
461 |
if( theMethod.isApplicable(value) ) {
|
462 |
this.reprMethodsCache.put(value.getClass(), theMethod);
|
463 |
return theMethod;
|
464 |
} |
465 |
} |
466 |
return this.reprObject; |
467 |
} |
468 |
|
469 |
@Override
|
470 |
public void registerClassLoader(ClassLoader loader) { |
471 |
this.loaders.add(loader);
|
472 |
} |
473 |
|
474 |
@Override
|
475 |
public List<ClassLoader> getClassLoaders() { |
476 |
return Collections.unmodifiableList(loaders); |
477 |
} |
478 |
|
479 |
@Override
|
480 |
public Formatter<ExpressionBuilder.Value> getExpressionBuilderFormatter() { |
481 |
return expressionBuilderFormatter;
|
482 |
} |
483 |
|
484 |
@Override
|
485 |
public void registerExpressionBuilderFormatter(Formatter<ExpressionBuilder.Value> formatter) { |
486 |
this.expressionBuilderFormatter = formatter;
|
487 |
} |
488 |
|
489 |
} |
490 |
|