Java Code Examples for org.apache.olingo.server.api.uri.queryoption.expression.Literal#getText()

The following examples show how to use org.apache.olingo.server.api.uri.queryoption.expression.Literal#getText() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: FilterExpressionVisitor.java    From olingo-odata4 with Apache License 2.0 6 votes vote down vote up 
@Override
public Object visitLiteral(Literal literal) throws ExpressionVisitException, ODataApplicationException {
  // To keep this tutorial simple, our filter expression visitor supports only Edm.Int32 and Edm.String
  // In real world scenarios it can be difficult to guess the type of an literal.
  // We can be sure, that the literal is a valid OData literal because the URI Parser checks 
  // the lexicographical structure
  
  // String literals start and end with an single quotation mark
  String literalAsString = literal.getText();
  if(literal.getType() instanceof EdmString) {
    String stringLiteral = "";
    if(literal.getText().length() > 2) {
      stringLiteral = literalAsString.substring(1, literalAsString.length() - 1);
    }
    
    return stringLiteral;
  } else {
    // Try to convert the literal into an Java Integer
    try {
      return Integer.parseInt(literalAsString);
    } catch(NumberFormatException e) {
      throw new ODataApplicationException("Only Edm.Int32 and Edm.String literals are implemented", 
          HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ENGLISH);
    }
  }
}
Example 2
Source File: FilterExpressionVisitor.java    From olingo-odata4 with Apache License 2.0 6 votes vote down vote up 
public Object visitLiteral(Literal literal) throws ExpressionVisitException, ODataApplicationException {
  // To keep this tutorial simple, our filter expression visitor supports only Edm.Int32 and Edm.String
  // In real world scenarios it can be difficult to guess the type of an literal.
  // We can be sure, that the literal is a valid OData literal because the URI Parser checks 
  // the lexicographical structure
  
  // String literals start and end with an single quotation mark
  String literalAsString = literal.getText();
  if(literal.getType() instanceof EdmString) {
    String stringLiteral = "";
    if(literal.getText().length() > 2) {
      stringLiteral = literalAsString.substring(1, literalAsString.length() - 1);
    }
    
    return stringLiteral;
  } else {
    // Try to convert the literal into an Java Integer
    try {
      return Integer.parseInt(literalAsString);
    } catch(NumberFormatException e) {
      throw new ODataApplicationException("Only Edm.Int32 and Edm.String literals are implemented", 
          HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ENGLISH);
    }
  }
}
Example 3
Source File: FilterExpressionVisitor.java    From syndesis with Apache License 2.0 5 votes vote down vote up 
@Override
public Object visitLiteral(Literal literal) throws ExpressionVisitException, ODataApplicationException {
    // To keep this tutorial simple, our filter expression visitor supports
    // only Edm.Int32 and Edm.String
    // In real world scenarios it can be difficult to guess the type of an
    // literal.
    // We can be sure, that the literal is a valid OData literal because the
    // URI Parser checks
    // the lexicographical structure

    // String literals start and end with an single quotation mark
    String literalAsString = literal.getText();
    if (literal.getType() instanceof EdmString) {
        String stringLiteral = "";
        if (literal.getText().length() > 2) {
            stringLiteral = literalAsString.substring(1, literalAsString.length() - 1);
        }

        return stringLiteral;
    }

    // Try to convert the literal into an Java Integer
    try {
        return Integer.parseInt(literalAsString);
    } catch (NumberFormatException e) {
        throw new ODataApplicationException("Only Edm.Int32 and Edm.String literals are implemented",
            HttpStatusCode.NOT_IMPLEMENTED.getStatusCode(), Locale.ENGLISH, e);
    }
}
Example 4
Source File: ExpressionVisitorImpl.java    From micro-integrator with Apache License 2.0 4 votes vote down vote up 
@Override
public VisitorOperand visitLiteral(Literal literal) throws ExpressionVisitException, ODataApplicationException {
    return new UntypedOperand(literal.getText());
}
Example 5
Source File: ExpressionVisitorImpl.java    From olingo-odata4 with Apache License 2.0 4 votes vote down vote up 
@Override
public VisitorOperand visitLiteral(final Literal literal) throws ExpressionVisitException, ODataApplicationException {
  return new UntypedOperand(literal.getText());
}
Example 6
Source File: FilterTreeToText.java    From olingo-odata4 with Apache License 2.0 4 votes vote down vote up 
@Override
public String visitLiteral(final Literal literal) throws ExpressionVisitException {
  return "<" + literal.getText() + ">";
}