Examples of org.eclipse.jdt.core.search.SearchEngine

org.eclipse.jdt.core.search.SearchEngine
A {@link SearchEngine} searches for Java elements following a search pattern.The search can be limited to a search scope.
Various search patterns can be created using the factory methods {@link SearchPattern#createPattern(String,int,int,int)}, {@link SearchPattern#createPattern(IJavaElement,int)}, {@link SearchPattern#createOrPattern(SearchPattern,SearchPattern)}.

For example, one can search for references to a method in the hierarchy of a type, or one can search for the declarations of types starting with "Abstract" in a project.

This class may be instantiated.
@noextend This class is not intended to be subclassed by clients.

            else
                javaSearchPattern = SearchPattern.createPattern(this.fSearchText, this.fSearchFor, this.fLimitTo, this.fMatchMode);


            if (javaSearchPattern != null) {
                JSPSearchParticipant[] participants = { getSearchParticipant() };
                SearchEngine engine = new SearchEngine();
                try {
                    if (jobMonitor != null)
                        jobMonitor.beginTask("", IProgressMonitor.UNKNOWN); //$NON-NLS-1$
                    engine.search(javaSearchPattern, participants, this.fScope, this.fRequestor, jobMonitor);
                } catch (CoreException e) {
                    if (DEBUG)
                        Logger.logException(e);
                }
                // non-CoreExceptions will permanently stall the Worker thread

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            else
                javaSearchPattern = SearchPattern.createPattern(fSearchText, fSearchFor, fLimitTo, fMatchMode);


            if (javaSearchPattern != null) {
                JSPSearchParticipant[] participants = { getSearchParticipant() };
                SearchEngine engine = new SearchEngine();
                try {
                    if (monitor != null)
                        monitor.beginTask("", 0); //$NON-NLS-1$
                    engine.search(javaSearchPattern, participants, fScope, fRequestor, monitor);
                } catch (CoreException e) {
                    Logger.logException(e);
                    //throw e;
                }
                // non-CoreExceptions will permanently stall the Worker thread

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          SearchPattern pattern = SearchPattern.createPattern(source
              .getJavaElement(), IJavaSearchConstants.REFERENCES);


          IJavaSearchScope scope = createProjectSearchScope(source
              .getJavaElement());
          SearchEngine searchEngine = new SearchEngine();
          AfferentCollector c = new AfferentCollector(source);
          searchEngine.search(pattern,
              new SearchParticipant[] { SearchEngine
                  .getDefaultSearchParticipant() }, scope, c,
              null);
          return c.getResult();
        } catch (CoreException e) {

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          IJavaSearchConstants.REFERENCES,
          SearchPattern.R_PATTERN_MATCH);
      IJavaSearchScope scope = SearchEngine
          .createJavaSearchScope(new IJavaElement[] { source
              .getJavaElement() });
      SearchEngine searchEngine = new SearchEngine();
      try {
        EfferentCollector c = new EfferentCollector(source);
        searchEngine.search(pattern,
            new SearchParticipant[] { SearchEngine
                .getDefaultSearchParticipant() }, scope, c,
            null);
        return c.getResult();
      } catch (CoreException e) {

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      findCallees(IProgressMonitor progressMonitor, String methodName, IJavaProject project, boolean isConstructor) 
  {
    try {
            MethodSearchRequestor.MethodDeclarationsSearchRequestor searchRequestor = 
              new MethodSearchRequestor.MethodDeclarationsSearchRequestor();
            SearchEngine searchEngine = new SearchEngine();


            IProgressMonitor monitor = new SubProgressMonitor(
                progressMonitor, 5, SubProgressMonitor.SUPPRESS_SUBTASK_LABEL);
            monitor.beginTask("Searching for declaration of " + methodName +
                (project != null ? " in " + project.getProject().getName() : ""), 100);
            IJavaSearchScope searchScope = getSearchScope(project);
            int matchType = !isConstructor ? IJavaSearchConstants.METHOD : IJavaSearchConstants.CONSTRUCTOR;
            SearchPattern pattern = SearchPattern.createPattern(
                methodName, 
          matchType,
          IJavaSearchConstants.DECLARATIONS, 
          SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE );
            
            searchEngine.search(
                pattern, 
          new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() },
                    searchScope, 
          searchRequestor, 
          monitor

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      MethodSearchRequestor.initializeParserMap();
      
          SearchRequestor searchRequestor =  (SearchRequestor)new MethodSearchRequestor.MethodReferencesSearchRequestor();
      
            SearchEngine searchEngine = new SearchEngine();


            IProgressMonitor monitor = new SubProgressMonitor(progressMonitor, 5, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
            
            monitor.beginTask("Searching for calls to " + methodName + (project != null ? " in " + project.getProject().getName() : ""), 100);
            
            IJavaSearchScope searchScope = getSearchScope(project);
            
            // This is kind of hacky: we need to make up a string name for the search to work right
            
            log("Looking for calls to " + methodName);
            
            int matchType = !isConstructor ? IJavaSearchConstants.METHOD : IJavaSearchConstants.CONSTRUCTOR;
            
            SearchPattern pattern = SearchPattern.createPattern(
                methodName, 
          matchType,
          IJavaSearchConstants.REFERENCES,
          SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE);
            
            searchEngine.search(
                pattern, 
          new SearchParticipant[] {SearchEngine.getDefaultSearchParticipant()},
                    searchScope, 
          searchRequestor, 
          monitor

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    }
    
    public static Collection/*<MethodUnitPair>*/ findDeclarations(IProgressMonitor progressMonitor, String methodName, IJavaProject project, boolean isConstructor) {
        try {
            SearchRequestor searchRequestor = new MethodSearchRequestor.MethodDeclarationsSearchRequestor(); 
            SearchEngine searchEngine = new SearchEngine();


            IProgressMonitor monitor = new SubProgressMonitor(
                    progressMonitor, 5, SubProgressMonitor.PREPEND_MAIN_LABEL_TO_SUBTASK);
            monitor.beginTask("Searching for calls to " + 
                    methodName + (project != null ? " in " + project.getProject().getName() : ""), 100);            
            IJavaSearchScope searchScope = getSearchScope(project);
            // This is kind of hacky: we need to make up a string name for the search to work right
            log("Looking for " + methodName);
            int matchType = !isConstructor ? IJavaSearchConstants.METHOD : IJavaSearchConstants.CONSTRUCTOR;
            SearchPattern pattern = SearchPattern.createPattern(
                    methodName, 
                    matchType,
                    IJavaSearchConstants.DECLARATIONS,
                    SearchPattern.R_EXACT_MATCH | SearchPattern.R_CASE_SENSITIVE );
            
            searchEngine.search(
                    pattern, 
                    new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() },
                    searchScope, 
                    searchRequestor, 
                    monitor

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  int addMethodsByName(String methodName, String type, String category, JavaProject project, IProgressMonitor monitor, boolean nonWeb) {
    int matches = 0;
    ViewContentProvider cp = ((ViewContentProvider)viewer.getContentProvider());
    try {
      MethodDeclarationsSearchRequestor requestor = new MethodDeclarationsSearchRequestor();
            SearchEngine searchEngine = new SearchEngine();


            IJavaSearchScope searchScope = CallerFinder.getSearchScope(project);
            SearchPattern pattern = SearchPattern.createPattern(
                methodName, 
          IJavaSearchConstants.METHOD,
          IJavaSearchConstants.DECLARATIONS, 
          SearchPattern.R_PATTERN_MATCH | SearchPattern.R_CASE_SENSITIVE
          );
     
      searchEngine.search(
          pattern, 
          new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() },
              searchScope, 
              requestor, 
          monitor

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  public void addAnnotationToFieldsOfType(String targetClass, Class<? extends java.lang.annotation.Annotation> annotation, Map<String, Object> properties) {
    try {
      IType element = javaProject.findType(targetClass);


      SearchEngine searchEngine = new SearchEngine();
      SearchPattern pattern = SearchPattern.createPattern(element, IJavaSearchConstants.REFERENCES);
      SearchParticipant[] participants = new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() };
      IJavaSearchScope scope = SearchEngine.createWorkspaceScope();


      BasicSearchRequestor requestor = new BasicSearchRequestor();
      searchEngine.search(pattern, participants, scope, requestor, null);


      SearchMatch[] matches = requestor.getMatches();
      for (SearchMatch match : matches) {
        try {
          IJavaElement javaElement = (IJavaElement) ((PlatformObject) (match.getElement())).getAdapter(IJavaElement.class);

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    modifyBlocks(fromMethod, blockModifier);
  }


  private void modifyBlocks(final IMethod fromMethod, BlockModifier blockModifier) {
    try {
      SearchEngine searchEngine = new SearchEngine();
      SearchPattern pattern = SearchPattern.createPattern(fromMethod, IJavaSearchConstants.ALL_OCCURRENCES | IJavaSearchConstants.IGNORE_RETURN_TYPE);
      SearchParticipant[] participants = new SearchParticipant[] { SearchEngine.getDefaultSearchParticipant() };
      IJavaSearchScope scope = SearchEngine.createWorkspaceScope();


      BasicSearchRequestor requestor = new BasicSearchRequestor();
      searchEngine.search(pattern, participants, scope, requestor, null);


      SearchMatch[] matches = requestor.getMatches();
      for (SearchMatch match : matches) {
        try {
          if (!(match instanceof MethodReferenceMatch)) {

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