net.sourceforge.phpeclipse/src/net/sourceforge/phpeclipse/phpeditor/php/PHPCompletionProcessor.java

   1 /**********************************************************************
   2  Copyright (c) 2000, 2002 IBM Corp. and others.
   3  All rights reserved. This program and the accompanying materials
   4  are made available under the terms of the Common Public License v1.0
   5  which accompanies this distribution, and is available at
   6  http://www.eclipse.org/legal/cpl-v10.html
   7
   8  Contributors:
   9  IBM Corporation - Initial implementation
  10  Klaus Hartlage - www.eclipseproject.de
  11  **********************************************************************/
  12 package net.sourceforge.phpeclipse.phpeditor.php;
  13
  14 import java.sql.Connection;
  15 import java.sql.DatabaseMetaData;
  16 import java.sql.ResultSet;
  17 import java.sql.SQLException;
  18 import java.util.ArrayList;
  19 import java.util.Arrays;
  20 import java.util.List;
  21 import java.util.Map;
  22 import java.util.SortedMap;
  23
  24 import net.sourceforge.phpdt.core.IBuffer;
  25 import net.sourceforge.phpdt.core.ICompilationUnit;
  26 import net.sourceforge.phpdt.core.IJavaProject;
  27 import net.sourceforge.phpdt.core.JavaModelException;
  28 import net.sourceforge.phpdt.core.ToolFactory;
  29 import net.sourceforge.phpdt.core.compiler.ITerminalSymbols;
  30 import net.sourceforge.phpdt.core.compiler.InvalidInputException;
  31 import net.sourceforge.phpdt.internal.compiler.IProblemFactory;
  32 import net.sourceforge.phpdt.internal.compiler.SourceElementParser;
  33 import net.sourceforge.phpdt.internal.compiler.impl.CompilerOptions;
  34 import net.sourceforge.phpdt.internal.compiler.parser.Scanner;
  35 import net.sourceforge.phpdt.internal.compiler.problem.DefaultProblemFactory;
  36 import net.sourceforge.phpdt.internal.core.CompilationUnit;
  37 import net.sourceforge.phpdt.internal.core.CompilationUnitStructureRequestor;
  38 import net.sourceforge.phpdt.internal.core.JavaModelManager;
  39 import net.sourceforge.phpdt.internal.core.JavaProject;
  40 import net.sourceforge.phpdt.internal.corext.template.ContextType;
  41 import net.sourceforge.phpdt.internal.corext.template.ContextTypeRegistry;
  42 import net.sourceforge.phpdt.internal.corext.template.php.CompilationUnitContextType;
  43 import net.sourceforge.phpdt.internal.corext.template.php.PHPUnitContext;
  44 import net.sourceforge.phpdt.internal.ui.PHPUiImages;
  45 import net.sourceforge.phpdt.internal.ui.text.java.IPHPCompletionProposal;
  46 import net.sourceforge.phpdt.internal.ui.text.java.PHPCompletionProposalComparator;
  47 import net.sourceforge.phpdt.internal.ui.text.template.BuiltInEngine;
  48 import net.sourceforge.phpdt.internal.ui.text.template.DeclarationEngine;
  49 import net.sourceforge.phpdt.internal.ui.text.template.IdentifierEngine;
  50 import net.sourceforge.phpdt.internal.ui.text.template.SQLProposal;
  51 import net.sourceforge.phpdt.internal.ui.text.template.TemplateEngine;
  52 import net.sourceforge.phpdt.ui.IWorkingCopyManager;
  53 import net.sourceforge.phpeclipse.IPreferenceConstants;
  54 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  55 import net.sourceforge.phpeclipse.builder.IdentifierIndexManager;
  56 import net.sourceforge.phpeclipse.internal.compiler.ast.CompilationUnitDeclaration;
  57 import net.sourceforge.phpeclipse.overlaypages.Util;
  58 import net.sourceforge.phpeclipse.phpeditor.PHPEditor;
  59 import net.sourceforge.phpeclipse.phpeditor.PHPSyntaxRdr;
  60
  61 import org.eclipse.core.resources.IFile;
  62 import org.eclipse.core.resources.IProject;
  63 import org.eclipse.jface.text.BadLocationException;
  64 import org.eclipse.jface.text.IDocument;
  65 import org.eclipse.jface.text.IRegion;
  66 import org.eclipse.jface.text.ITextViewer;
  67 import org.eclipse.jface.text.Region;
  68 import org.eclipse.jface.text.TextPresentation;
  69 import org.eclipse.jface.text.contentassist.ICompletionProposal;
  70 import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
  71 import org.eclipse.jface.text.contentassist.IContextInformation;
  72 import org.eclipse.jface.text.contentassist.IContextInformationExtension;
  73 import org.eclipse.jface.text.contentassist.IContextInformationPresenter;
  74 import org.eclipse.jface.text.contentassist.IContextInformationValidator;
  75 import org.eclipse.swt.graphics.Image;
  76 import org.eclipse.ui.IEditorPart;
  77 import org.eclipse.ui.IFileEditorInput;
  78
  79 import com.quantum.model.Bookmark;
  80 import com.quantum.model.BookmarkCollection;
  81 import com.quantum.model.NotConnectedException;
  82 import com.quantum.util.connection.ConnectionUtil;
  83
  84 /**
  85  * Example PHP completion processor.
  86  */
  87 public class PHPCompletionProcessor implements IContentAssistProcessor {
  88   /**
  89    * Simple content assist tip closer. The tip is valid in a range of 5
  90    * characters around its popup location.
  91    */
  92   protected static class Validator implements IContextInformationValidator,
  93       IContextInformationPresenter {
  94     protected int fInstallOffset;
  95
  96     /*
  97      * @see IContextInformationValidator#isContextInformationValid(int)
  98      */
  99     public boolean isContextInformationValid(int offset) {
 100       return Math.abs(fInstallOffset - offset) < 5;
 101     }
 102
 103     /*
 104      * @see IContextInformationValidator#install(IContextInformation,
 105      *      ITextViewer, int)
 106      */
 107     public void install(IContextInformation info, ITextViewer viewer, int offset) {
 108       fInstallOffset = offset;
 109     }
 110
 111     /*
 112      * @see org.eclipse.jface.text.contentassist.IContextInformationPresenter#updatePresentation(int,
 113      *      TextPresentation)
 114      */
 115     public boolean updatePresentation(int documentPosition,
 116         TextPresentation presentation) {
 117       return false;
 118     }
 119   };
 120
 121   private static class ContextInformationWrapper implements
 122       IContextInformation, IContextInformationExtension {
 123     private final IContextInformation fContextInformation;
 124
 125     private int fPosition;
 126
 127     public ContextInformationWrapper(IContextInformation contextInformation) {
 128       fContextInformation = contextInformation;
 129     }
 130
 131     /*
 132      * @see IContextInformation#getContextDisplayString()
 133      */
 134     public String getContextDisplayString() {
 135       return fContextInformation.getContextDisplayString();
 136     }
 137
 138     /*
 139      * @see IContextInformation#getImage()
 140      */
 141     public Image getImage() {
 142       return fContextInformation.getImage();
 143     }
 144
 145     /*
 146      * @see IContextInformation#getInformationDisplayString()
 147      */
 148     public String getInformationDisplayString() {
 149       return fContextInformation.getInformationDisplayString();
 150     }
 151
 152     /*
 153      * @see IContextInformationExtension#getContextInformationPosition()
 154      */
 155     public int getContextInformationPosition() {
 156       return fPosition;
 157     }
 158
 159     public void setContextInformationPosition(int position) {
 160       fPosition = position;
 161     }
 162   };
 163
 164   private class TableName {
 165     String fTableName;
 166
 167     TableName() {
 168       fTableName = null;
 169     }
 170
 171     /**
 172      * @return Returns the tableName.
 173      */
 174     public String getTableName() {
 175       if (fTableName == null) {
 176         return "<!--no-table-->";
 177       }
 178       return fTableName;
 179     }
 180
 181     /**
 182      * @param tableName
 183      *          The tableName to set.
 184      */
 185     public void setTableName(String tableName) {
 186       fTableName = tableName;
 187     }
 188   }
 189
 190   private char[] fProposalAutoActivationSet;
 191
 192   protected IContextInformationValidator fValidator = new Validator();
 193
 194   private TemplateEngine fTemplateEngine;
 195
 196   private PHPCompletionProposalComparator fComparator;
 197
 198   private int fNumberOfComputedResults = 0;
 199
 200   private IEditorPart fEditor;
 201
 202   protected IWorkingCopyManager fManager;
 203
 204   public PHPCompletionProcessor(IEditorPart editor) {
 205     fEditor = editor;
 206     fManager = PHPeclipsePlugin.getDefault().getWorkingCopyManager();
 207     ContextType contextType = ContextTypeRegistry.getInstance().getContextType(
 208         "php"); //$NON-NLS-1$
 209     if (contextType != null)
 210       fTemplateEngine = new TemplateEngine(contextType);
 211     fComparator = new PHPCompletionProposalComparator();
 212   }
 213
 214   /**
 215    * Tells this processor to order the proposals alphabetically.
 216    *
 217    * @param order
 218    *          <code>true</code> if proposals should be ordered.
 219    */
 220   public void orderProposalsAlphabetically(boolean order) {
 221     fComparator.setOrderAlphabetically(order);
 222   }
 223
 224   /**
 225    * Sets this processor's set of characters triggering the activation of the
 226    * completion proposal computation.
 227    *
 228    * @param activationSet
 229    *          the activation set
 230    */
 231   public void setCompletionProposalAutoActivationCharacters(char[] activationSet) {
 232     fProposalAutoActivationSet = activationSet;
 233   }
 234
 235   /*
 236    * (non-Javadoc) Method declared on IContentAssistProcessor
 237    */
 238   public ICompletionProposal[] computeCompletionProposals(ITextViewer viewer,
 239       int documentOffset) {
 240     int contextInformationPosition = guessContextInformationPosition(viewer,
 241         documentOffset);
 242     return internalComputeCompletionProposals(viewer, documentOffset,
 243         contextInformationPosition);
 244   }
 245
 246   private int getLastToken(ITextViewer viewer, int completionPosition,
 247       PHPUnitContext context, TableName tableName) {
 248     IDocument document = viewer.getDocument();
 249     int start = context.getStart();
 250     int end = context.getEnd();
 251     String startText;
 252     int lastSignificantToken = ITerminalSymbols.TokenNameEOF;
 253     try {
 254       // begin search 2 lines behind of this
 255       int j = start;
 256       if (j != 0) {
 257         char ch;
 258         while (j-- > 0) {
 259           ch = document.getChar(j);
 260           if (ch == '\n') {
 261             break;
 262           }
 263         }
 264         while (j-- > 0) {
 265           ch = document.getChar(j);
 266           if (ch == '\n') {
 267             break;
 268           }
 269         }
 270       }
 271       if (j != start) {
 272         // scan the line for the dereferencing operator '->'
 273         startText = document.get(j, start - j);
 274         if (Scanner.DEBUG) {
 275           System.out.println(startText);
 276         }
 277         int token = ITerminalSymbols.TokenNameEOF;
 278         //        token = getLastSQLToken(startText);
 279         tableName.setTableName(getLastSQLTableName(startText));
 280         Scanner scanner = ToolFactory.createScanner(false, false, false);
 281         scanner.setSource(startText.toCharArray());
 282         scanner.setPHPMode(true);
 283         int beforeLastToken = ITerminalSymbols.TokenNameEOF;
 284         int lastToken = ITerminalSymbols.TokenNameEOF;
 285         char[] ident;
 286         try {
 287           token = scanner.getNextToken();
 288           lastToken = token;
 289           while (token != ITerminalSymbols.TokenNameERROR
 290               && token != ITerminalSymbols.TokenNameEOF) {
 291             beforeLastToken = lastToken;
 292             if (lastToken==ITerminalSymbols.TokenNameVariable) {
 293               ident = scanner.getCurrentTokenSource();
 294               if (ident.length==5 &&
 295                   ident[0]=='$' &&
 296                   ident[1]=='t' &&
 297                   ident[2]=='h' &&
 298                   ident[3]=='i' &&
 299                   ident[4]=='s') {
 300                 beforeLastToken = ITerminalSymbols.TokenNamethis_PHP_COMPLETION;
 301               }
 302             }
 303             lastToken = token;
 304             //                                                          System.out.println(scanner.toStringAction(lastToken));
 305             token = scanner.getNextToken();
 306           }
 307         } catch (InvalidInputException e1) {
 308         }
 309         switch (lastToken) {
 310         case ITerminalSymbols.TokenNameMINUS_GREATER:
 311           // dereferencing operator '->' found
 312           lastSignificantToken = ITerminalSymbols.TokenNameMINUS_GREATER;
 313           if (beforeLastToken == ITerminalSymbols.TokenNameVariable) {
 314             lastSignificantToken = ITerminalSymbols.TokenNameVariable;
 315           }
 316           break;
 317         case ITerminalSymbols.TokenNamenew:
 318           lastSignificantToken = ITerminalSymbols.TokenNamenew;
 319           break;
 320         }
 321       }
 322     } catch (BadLocationException e) {
 323     }
 324     return lastSignificantToken;
 325   }
 326
 327   String getSQLTableName(String sqlText, int start) {
 328     int tableNameStart = -1;
 329     int currentCharacterPosition = start + 1;
 330     char ch;
 331     try {
 332       while (true) {
 333         ch = sqlText.charAt(currentCharacterPosition++);
 334         if (tableNameStart == -1 && Character.isJavaIdentifierStart(ch)) {
 335           tableNameStart = currentCharacterPosition - 1;
 336         } else {
 337           if (!Character.isJavaIdentifierPart(ch)) {
 338             return sqlText.substring(tableNameStart,
 339                 currentCharacterPosition - 1);
 340           }
 341         }
 342       }
 343     } catch (IndexOutOfBoundsException e) {
 344       if (tableNameStart >= 0) {
 345         return sqlText.substring(tableNameStart, currentCharacterPosition - 1);
 346       }
 347     }
 348     return "";
 349   }
 350
 351   private String getLastSQLTableName(String startText) {
 352     int token;
 353     // scan for sql identifiers
 354     char ch = ' ';
 355     int currentSQLPosition = startText.length();
 356     int identEnd = -1;
 357     String ident = null;
 358     boolean whiteSpace = true;
 359     try {
 360       while (true) {
 361         ch = startText.charAt(--currentSQLPosition);
 362         if (ch >= 'A' && ch <= 'Z') {
 363           if (identEnd < 0) {
 364             identEnd = currentSQLPosition + 1;
 365           }
 366         } else if (ch >= 'a' && ch <= 'z') {
 367           if (identEnd < 0) {
 368             identEnd = currentSQLPosition + 1;
 369           }
 370         } else if (identEnd >= 0) {
 371           ident = startText.substring(currentSQLPosition + 1, identEnd);
 372           // select -- from -- where --
 373           // update -- set -- where --
 374           // insert into -- ( -- ) values ( -- )
 375           if (ident.length() >= 4 && ident.length() <= 6) {
 376             ident = ident.toLowerCase();
 377             switch (ident.length()) {
 378             //              case 3 :
 379             //                if (ident.equals("set")) {
 380             //                  // System.out.println("set");
 381             //                  token = ITerminalSymbols.TokenNameSQLset;
 382             //                  return token;
 383             //                }
 384             //                break;
 385             case 4:
 386               if (ident.equals("from")) {
 387                 //                  System.out.println("from");
 388                 token = ITerminalSymbols.TokenNameSQLfrom;
 389                 return getSQLTableName(startText, identEnd);
 390               } else if (ident.equals("into")) {
 391                 //                System.out.println("into");
 392                 token = ITerminalSymbols.TokenNameSQLinto;
 393                 return getSQLTableName(startText, identEnd);
 394               }
 395               break;
 396             //              case 5 :
 397             //                if (ident.equals("where")) {
 398             //                  // System.out.println("where");
 399             //                  token = ITerminalSymbols.TokenNameSQLwhere;
 400             //                  return token;
 401             //                }
 402             //                break;
 403             case 6:
 404               //                if (ident.equals("select")) {
 405               //                  // System.out.println("select");
 406               //                  token = ITerminalSymbols.TokenNameSQLselect;
 407               //                  return token;
 408               //                } else if (ident.equals("insert")) {
 409               //                  // System.out.println("insert");
 410               //                  token = ITerminalSymbols.TokenNameSQLinsert;
 411               //                  return token;
 412               //                } else
 413               if (ident.equals("update")) {
 414                 //                  System.out.println("update");
 415                 token = ITerminalSymbols.TokenNameSQLupdate;
 416                 return getSQLTableName(startText, identEnd);
 417               }
 418               //                else if (ident.equals("values")) {
 419               //                  // System.out.println("values");
 420               //                  token = ITerminalSymbols.TokenNameSQLvalues;
 421               //                  return token;
 422               //                }
 423               break;
 424             }
 425           }
 426           whiteSpace = false;
 427           identEnd = -1;
 428         } else if (Character.isWhitespace(ch)) {
 429         } else {
 430           whiteSpace = false;
 431         }
 432       }
 433     } catch (IndexOutOfBoundsException e) {
 434     }
 435     return "<!--no-table-->";
 436   }
 437
 438   /**
 439    * Detect the last significant SQL token in the text before the completion
 440    *
 441    * @param startText
 442    */
 443   private int getLastSQLToken(String startText) {
 444     int token;
 445     // scan for sql identifiers
 446     char ch = ' ';
 447     int currentSQLPosition = startText.length();
 448     int identEnd = -1;
 449     String ident = null;
 450     boolean whiteSpace = true;
 451     try {
 452       while (true) {
 453         ch = startText.charAt(--currentSQLPosition);
 454         if (ch >= 'A' && ch <= 'Z') {
 455           if (identEnd < 0) {
 456             identEnd = currentSQLPosition + 1;
 457           }
 458         } else if (ch >= 'a' && ch <= 'z') {
 459           if (identEnd < 0) {
 460             identEnd = currentSQLPosition + 1;
 461           }
 462         } else if (identEnd >= 0) {
 463           ident = startText.substring(currentSQLPosition + 1, identEnd);
 464           // select -- from -- where --
 465           // update -- set -- where --
 466           // insert into -- ( -- ) values ( -- )
 467           if (ident.length() >= 3 && ident.length() <= 6) {
 468             ident = ident.toLowerCase();
 469             switch (ident.length()) {
 470             case 3:
 471               if (ident.equals("set")) {
 472                 //                  System.out.println("set");
 473                 token = ITerminalSymbols.TokenNameSQLset;
 474                 return token;
 475               }
 476               break;
 477             case 4:
 478               if (ident.equals("from")) {
 479                 //                  System.out.println("from");
 480                 token = ITerminalSymbols.TokenNameSQLfrom;
 481                 //getSQLTableName();
 482                 return token;
 483               } else if (ident.equals("into")) {
 484                 //                System.out.println("into");
 485                 token = ITerminalSymbols.TokenNameSQLinto;
 486                 return token;
 487               }
 488               break;
 489             case 5:
 490               if (ident.equals("where")) {
 491                 //                  System.out.println("where");
 492                 token = ITerminalSymbols.TokenNameSQLwhere;
 493                 return token;
 494               }
 495               break;
 496             case 6:
 497               if (ident.equals("select")) {
 498                 //                  System.out.println("select");
 499                 token = ITerminalSymbols.TokenNameSQLselect;
 500                 return token;
 501               } else if (ident.equals("insert")) {
 502                 //                  System.out.println("insert");
 503                 token = ITerminalSymbols.TokenNameSQLinsert;
 504                 return token;
 505               } else if (ident.equals("update")) {
 506                 //                  System.out.println("update");
 507                 token = ITerminalSymbols.TokenNameSQLupdate;
 508                 return token;
 509               } else if (ident.equals("values")) {
 510                 //                System.out.println("values");
 511                 token = ITerminalSymbols.TokenNameSQLvalues;
 512                 return token;
 513               }
 514               break;
 515             }
 516           }
 517           whiteSpace = false;
 518           identEnd = -1;
 519         } else if (Character.isWhitespace(ch)) {
 520         } else {
 521           whiteSpace = false;
 522         }
 523       }
 524     } catch (IndexOutOfBoundsException e) {
 525     }
 526     return ITerminalSymbols.TokenNameEOF;
 527   }
 528
 529   private ICompletionProposal[] internalComputeCompletionProposals(
 530       ITextViewer viewer, int offset, int contextOffset) {
 531
 532     IDocument document = viewer.getDocument();
 533     Object[] identifiers = null;
 534     IFile file = null;
 535     IProject project = null;
 536     if (offset > 0) {
 537       PHPEditor editor = null;
 538       if (fEditor != null && (fEditor instanceof PHPEditor)) {
 539         editor = (PHPEditor) fEditor;
 540         file = ((IFileEditorInput) editor.getEditorInput()).getFile();
 541         project = file.getProject();
 542         //        outlinePage = editor.getfOutlinePage();
 543         // TODO: get the identifiers from the new model
 544         //        if (outlinePage instanceof PHPContentOutlinePage) {
 545         //          identifiers = ((PHPContentOutlinePage) outlinePage).getVariables();
 546         //        }
 547       }
 548     }
 549
 550     ContextType phpContextType = ContextTypeRegistry.getInstance()
 551         .getContextType("php"); //$NON-NLS-1$
 552     ((CompilationUnitContextType) phpContextType).setContextParameters(
 553         document, offset, 0);
 554     PHPUnitContext context = (PHPUnitContext) phpContextType.createContext();
 555     String prefix = context.getKey();
 556     TableName sqlTable = new TableName();
 557     int lastSignificantToken = getLastToken(viewer, offset, context, sqlTable);
 558     boolean useClassMembers = (lastSignificantToken == ITerminalSymbols.TokenNameMINUS_GREATER)
 559         || (lastSignificantToken == ITerminalSymbols.TokenNameVariable)
 560         || (lastSignificantToken == ITerminalSymbols.TokenNamenew)
 561         || (lastSignificantToken == ITerminalSymbols.TokenNamethis_PHP_COMPLETION);
 562     boolean emptyPrefix = prefix == null || prefix.equals("");
 563     if (fTemplateEngine != null) {
 564       IPHPCompletionProposal[] templateResults = new IPHPCompletionProposal[0];
 565       ICompletionProposal[] results;
 566       if (!emptyPrefix) {
 567         fTemplateEngine.reset();
 568         fTemplateEngine.complete(viewer, offset); //, unit);
 569         templateResults = fTemplateEngine.getResults();
 570       }
 571       IPHPCompletionProposal[] identifierResults = new IPHPCompletionProposal[0];
 572       if ((!useClassMembers) && identifiers != null) {
 573         IdentifierEngine identifierEngine;
 574         ContextType contextType = ContextTypeRegistry.getInstance()
 575             .getContextType("php"); //$NON-NLS-1$
 576         if (contextType != null) {
 577           identifierEngine = new IdentifierEngine(contextType);
 578           identifierEngine.complete(viewer, offset, identifiers);
 579           identifierResults = identifierEngine.getResults();
 580         }
 581       }
 582       // declarations stored in file project.index on project level
 583       IPHPCompletionProposal[] declarationResults = new IPHPCompletionProposal[0];
 584       if (project != null) {
 585         DeclarationEngine declarationEngine;
 586         ContextType contextType = ContextTypeRegistry.getInstance()
 587             .getContextType("php"); //$NON-NLS-1$
 588         if (contextType != null) {
 589           IdentifierIndexManager indexManager = PHPeclipsePlugin.getDefault()
 590               .getIndexManager(project);
 591           SortedMap sortedMap = indexManager.getIdentifierMap();
 592           declarationEngine = new DeclarationEngine(project, contextType,
 593               lastSignificantToken, file);
 594           declarationEngine.complete(viewer, offset, sortedMap);
 595           declarationResults = declarationEngine.getResults();
 596         }
 597       }
 598       // built in function names from phpsyntax.xml
 599       ArrayList syntaxbuffer = PHPSyntaxRdr.getSyntaxData();
 600       IPHPCompletionProposal[] builtinResults = new IPHPCompletionProposal[0];
 601       if ((!useClassMembers) && syntaxbuffer != null) {
 602         BuiltInEngine builtinEngine;
 603         String proposal;
 604         ContextType contextType = ContextTypeRegistry.getInstance()
 605             .getContextType("php"); //$NON-NLS-1$
 606         if (contextType != null) {
 607           builtinEngine = new BuiltInEngine(contextType);
 608           builtinEngine.complete(viewer, offset, syntaxbuffer);
 609           builtinResults = builtinEngine.getResults();
 610         }
 611       }
 612       IPHPCompletionProposal[] sqlResults = new IPHPCompletionProposal[0];
 613       if (project != null) {
 614         // Get The Database bookmark from the Quantum SQL plugin:
 615         BookmarkCollection sqlBookMarks = BookmarkCollection.getInstance();
 616         if (sqlBookMarks != null) {
 617           String bookmarkString = Util.getMiscProjectsPreferenceValue(project,
 618               IPreferenceConstants.PHP_BOOKMARK_DEFAULT);
 619           if (bookmarkString != null && !bookmarkString.equals("")) {
 620             Bookmark bookmark = sqlBookMarks.find(bookmarkString);
 621             ArrayList sqlList = new ArrayList();
 622             if (bookmark != null && !bookmark.isConnected()) {
 623               new ConnectionUtil().connect(bookmark, null);
 624             }
 625             if (bookmark != null && bookmark.isConnected()) {
 626               try {
 627                 Connection connection = bookmark.getConnection();
 628                 DatabaseMetaData metaData = connection.getMetaData();
 629
 630                 if (metaData != null) {
 631                   int start = context.getStart();
 632                   int end = context.getEnd();
 633                   String foundSQLTableName = sqlTable.getTableName();
 634                   String tableName;
 635                   String columnName;
 636                   String prefixWithoutDollar = prefix;
 637                   boolean isDollarPrefix = false;
 638                   if (prefix.length() > 0 && prefix.charAt(0) == '$') {
 639                     prefixWithoutDollar = prefix.substring(1);
 640                     isDollarPrefix = true;
 641                   }
 642                   IRegion region = new Region(start, end - start);
 643                   ResultSet set;
 644                   if (!isDollarPrefix) {
 645                     set = metaData.getTables(null, null, prefixWithoutDollar
 646                         + "%", null);
 647                     while (set.next()) {
 648                       //                  String tempSchema = set.getString("TABLE_SCHEM");
 649                       //                  tempSchema = (tempSchema == null) ? "" :
 650                       // tempSchema.trim();
 651                       tableName = set.getString("TABLE_NAME");
 652                       tableName = (tableName == null) ? "" : tableName.trim();
 653                       if (tableName != null && tableName.length() > 0) {
 654                         sqlList.add(new SQLProposal(tableName, context, region,
 655                             viewer, PHPUiImages.get(PHPUiImages.IMG_TABLE)));
 656                       }
 657                     }
 658                     set.close();
 659                   }
 660                   set = metaData.getColumns(null, null, "%",
 661                       prefixWithoutDollar + "%");
 662                   SQLProposal sqlProposal;
 663                   while (set.next()) {
 664                     columnName = set.getString("COLUMN_NAME");
 665                     columnName = (columnName == null) ? "" : columnName.trim();
 666                     tableName = set.getString("TABLE_NAME");
 667                     tableName = (tableName == null) ? "" : tableName.trim();
 668                     if (tableName != null && tableName.length() > 0
 669                         && columnName != null && columnName.length() > 0) {
 670                       if (isDollarPrefix) {
 671                         sqlProposal = new SQLProposal(tableName, "$"
 672                             + columnName, context, region, viewer, PHPUiImages
 673                             .get(PHPUiImages.IMG_COLUMN));
 674                       } else {
 675                         sqlProposal = new SQLProposal(tableName, columnName,
 676                             context, region, viewer, PHPUiImages
 677                                 .get(PHPUiImages.IMG_COLUMN));
 678                       }
 679                       if (tableName.equals(foundSQLTableName)) {
 680                         sqlProposal.setRelevance(90);
 681                       } else if (tableName.indexOf(foundSQLTableName) >= 0) {
 682                         sqlProposal.setRelevance(75);
 683                       }
 684                       sqlList.add(sqlProposal);
 685                     }
 686                   }
 687                   set.close();
 688                   sqlResults = new IPHPCompletionProposal[sqlList.size()];
 689                   for (int i = 0; i < sqlList.size(); i++) {
 690                     sqlResults[i] = (SQLProposal) sqlList.get(i);
 691                   }
 692                 }
 693               } catch (NotConnectedException e) {
 694                 // ignore this - not mission critical
 695               } catch (SQLException e) {
 696                 e.printStackTrace();
 697               }
 698             }
 699           }
 700         }
 701       }
 702       // concatenate the result arrays
 703       IPHPCompletionProposal[] total;
 704       total = new IPHPCompletionProposal[templateResults.length
 705           + identifierResults.length + builtinResults.length
 706           + declarationResults.length + sqlResults.length];
 707       System.arraycopy(templateResults, 0, total, 0, templateResults.length);
 708       System.arraycopy(identifierResults, 0, total, templateResults.length,
 709           identifierResults.length);
 710       System.arraycopy(builtinResults, 0, total, templateResults.length
 711           + identifierResults.length, builtinResults.length);
 712       System.arraycopy(declarationResults, 0, total, templateResults.length
 713           + identifierResults.length + builtinResults.length,
 714           declarationResults.length);
 715       System.arraycopy(sqlResults, 0, total, templateResults.length
 716           + identifierResults.length + builtinResults.length
 717           + declarationResults.length, sqlResults.length);
 718       results = total;
 719       fNumberOfComputedResults = (results == null ? 0 : results.length);
 720       /*
 721        * Order here and not in result collector to make sure that the order
 722        * applies to all proposals and not just those of the compilation unit.
 723        */
 724       return order(results);
 725     }
 726     return new IPHPCompletionProposal[0];
 727   }
 728
 729   private int guessContextInformationPosition(ITextViewer viewer, int offset) {
 730     int contextPosition = offset;
 731     IDocument document = viewer.getDocument();
 732     //    try {
 733     //
 734     //      PHPCodeReader reader= new PHPCodeReader();
 735     //      reader.configureBackwardReader(document, offset, true, true);
 736     //
 737     //      int nestingLevel= 0;
 738     //
 739     //      int curr= reader.read();
 740     //      while (curr != PHPCodeReader.EOF) {
 741     //
 742     //        if (')' == (char) curr)
 743     //          ++ nestingLevel;
 744     //
 745     //        else if ('(' == (char) curr) {
 746     //          -- nestingLevel;
 747     //
 748     //          if (nestingLevel < 0) {
 749     //            int start= reader.getOffset();
 750     //            if (looksLikeMethod(reader))
 751     //              return start + 1;
 752     //          }
 753     //        }
 754     //
 755     //        curr= reader.read();
 756     //      }
 757     //    } catch (IOException e) {
 758     //    }
 759     return contextPosition;
 760   }
 761
 762   /*
 763    * (non-Javadoc) Method declared on IContentAssistProcessor
 764    */
 765   //  public IContextInformation[] computeContextInformation(ITextViewer viewer,
 766   // int documentOffset) {
 767   //    IContextInformation[] result = new IContextInformation[5];
 768   //    for (int i = 0; i < result.length; i++)
 769   //      result[i] = new
 770   // ContextInformation(MessageFormat.format(PHPEditorMessages.getString("CompletionProcessor.ContextInfo.display.pattern"),
 771   // new Object[] { new Integer(i), new Integer(documentOffset)}),
 772   // //$NON-NLS-1$
 773   //      MessageFormat.format(PHPEditorMessages.getString("CompletionProcessor.ContextInfo.value.pattern"),
 774   // new Object[] { new Integer(i), new Integer(documentOffset - 5), new
 775   // Integer(documentOffset + 5)})); //$NON-NLS-1$
 776   //    return result;
 777   //  }
 778   /**
 779    * @see IContentAssistProcessor#computeContextInformation(ITextViewer, int)
 780    */
 781   public IContextInformation[] computeContextInformation(ITextViewer viewer,
 782       int offset) {
 783     int contextInformationPosition = guessContextInformationPosition(viewer,
 784         offset);
 785     List result = addContextInformations(viewer, contextInformationPosition);
 786     return (IContextInformation[]) result
 787         .toArray(new IContextInformation[result.size()]);
 788   }
 789
 790   private List addContextInformations(ITextViewer viewer, int offset) {
 791     ICompletionProposal[] proposals = internalComputeCompletionProposals(
 792         viewer, offset, -1);
 793     List result = new ArrayList();
 794     for (int i = 0; i < proposals.length; i++) {
 795       IContextInformation contextInformation = proposals[i]
 796           .getContextInformation();
 797       if (contextInformation != null) {
 798         ContextInformationWrapper wrapper = new ContextInformationWrapper(
 799             contextInformation);
 800         wrapper.setContextInformationPosition(offset);
 801         result.add(wrapper);
 802       }
 803     }
 804     return result;
 805   }
 806
 807   /**
 808    * Order the given proposals.
 809    */
 810   private ICompletionProposal[] order(ICompletionProposal[] proposals) {
 811     Arrays.sort(proposals, fComparator);
 812     return proposals;
 813   }
 814
 815   /*
 816    * (non-Javadoc) Method declared on IContentAssistProcessor
 817    */
 818   public char[] getCompletionProposalAutoActivationCharacters() {
 819     return fProposalAutoActivationSet;
 820     //    return null; // new char[] { '$' };
 821   }
 822
 823   /*
 824    * (non-Javadoc) Method declared on IContentAssistProcessor
 825    */
 826   public char[] getContextInformationAutoActivationCharacters() {
 827     return new char[] {};
 828   }
 829
 830   /*
 831    * (non-Javadoc) Method declared on IContentAssistProcessor
 832    */
 833   public IContextInformationValidator getContextInformationValidator() {
 834     return fValidator;
 835   }
 836
 837   /*
 838    * (non-Javadoc) Method declared on IContentAssistProcessor
 839    */
 840   public String getErrorMessage() {
 841     return null;
 842   }
 843 }