Examples with LengthExpression org.eclipse.persistence.jpa.jpql.parser.LengthExpression used on opensource projects

Example 1 with LengthExpression

use of org.eclipse.persistence.jpa.jpql.parser.LengthExpression in project eclipselink by eclipse-ee4j.

the class ReportItemBuilder method visit.

@Override
public void visit(LengthExpression expression) {
    Expression queryExpression = queryContext.buildExpression(expression, type);
    addAttribute(ExpressionTools.EMPTY_STRING, queryExpression, type[0]);
}

Example 2 with LengthExpression

use of org.eclipse.persistence.jpa.jpql.parser.LengthExpression in project eclipselink by eclipse-ee4j.

the class AbstractSemanticValidator method validateLikeExpression.

/**
 * Validates the string expression of the given <code><b>LIKE</b></code> expression. The test to
 * perform is:
 * <ul>
 * <li>If the string expression is a path expression, validation makes sure it is a basic
 * mapping, an association field is not allowed.</li>
 * <li>If the encapsulated expression is not a path expression, validation will be redirected to
 * that expression but the returned status will not be changed.</li>
 * </ul>
 *
 * @param expression The {@link LengthExpression} to validate by validating its string expression
 * @return A number indicating the validation result. {@link #isValid(int, int)} can be used to
 * determine the validation status of an expression based on its position
 */
protected int validateLikeExpression(LikeExpression expression) {
    int result = 0;
    // Validate the "first" expression
    if (expression.hasStringExpression()) {
        Expression stringExpression = expression.getStringExpression();
        // Special case for state field path expression, association field is not allowed
        StateFieldPathExpression pathExpression = getStateFieldPathExpression(stringExpression);
        if (pathExpression != null) {
            boolean valid = validateStateFieldPathExpression(pathExpression, validPathExpressionTypeForStringExpression());
            updateStatus(result, 0, valid);
        } else {
            stringExpression.accept(this);
        }
    }
    // Validate the pattern value
    expression.getPatternValue().accept(this);
    // Validate the escape character
    expression.getEscapeCharacter().accept(this);
    return result;
}