Examples of org.eclipse.persistence.jpa.jpql.WordParser

Package org.eclipse.persistence.jpa.jpql

Examples of org.eclipse.persistence.jpa.jpql.WordParser

org.eclipse.persistence.jpa.jpql.WordParser
This "parser/scanner" holds onto the string version of the JPQL query that is parsed into a parsed tree. It uses a cursor that lets the current {@link org.eclipse.persistence.jpa.jpql.parser.Expression Expression} object to parse its fragment of the query.
Provisional API: This interface is part of an interim API that is still under development and expected to change significantly before reaching stability. It is available at this early stage to solicit feedback from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken (repeatedly) as the API evolves. @version 2.4.2 @since 2.3 @author Pascal Filion


      if (hasLeftParenthesis || hasRightParenthesis)  {
        singleInputParameter = Boolean.FALSE;
      }
      else {
        WordParser wordParser = new WordParser(getInItems().toActualText());
        String word = wordParser.word();
        wordParser.moveForward(word);


        singleInputParameter = (word.length() > 0) &&
                               ExpressionTools.isParameter(word.charAt(0)) &&
                               wordParser.isTail();
      }
    }


    return singleInputParameter;
  }

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    // Nothing to replace
    if (ExpressionTools.stringIsEmpty(proposal)) {
      return new Result(jpqlQuery, position);
    }


    WordParser wordParser = new WordParser(jpqlQuery);
    wordParser.setPosition(position);


    // Calculate the start and end positions
    int[] positions = buildPositions(wordParser, proposal, insert);


    // Create the new query

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    // First convert the escape characters into their unicode characters
    String query = XmlEscapeCharacterConverter.unescape(jpqlQuery, positions);


    // Calculate the start and end positions
    WordParser wordParser = new WordParser(query);
    wordParser.setPosition(positions[0]);
    int[] proposalPositions = buildPositions(wordParser, proposal, insert);


    // Escape the proposal
    proposal = XmlEscapeCharacterConverter.escape(proposal, new int[1]);

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      // Calculate the position of the cursor within the parsed tree
      queryPosition = jpqlExpression.buildPosition(jpqlQuery, position);


      // Retrieve the word from the JPQL query (which is the text before the position of the cursor)
      wordParser = new WordParser(jpqlQuery);
      wordParser.setPosition(position);
      word = wordParser.partialWord();


      // Now visit the deepest leaf first and calculate the possible proposals
      proposals = new DefaultContentAssistProposals(queryContext.getGrammar(), extension);

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                        JPQLGrammar jpqlGrammar,
                        String queryBNFId,
                        boolean tolerant) {


    this(jpqlGrammar, queryBNFId, tolerant);
    parse(new WordParser(jpqlFragment), tolerant);
  }

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Related Classes of org.eclipse.persistence.jpa.jpql.WordParser

org.eclipse.persistence.jpa.jpql.parser.InExpression

org.eclipse.persistence.jpa.jpql.parser.JPQLExpression

org.eclipse.persistence.jpa.jpql.tools.AbstractContentAssistVisitor

org.eclipse.persistence.jpa.jpql.tools.DefaultContentAssistProposals

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