Example usage for com.google.common.collect Constraint Constraint

Introduction

In this page you can find the example usage for com.google.common.collect Constraint Constraint.

Prototype

Constraint

Source Link

Usage

From source file:org.richfaces.cdk.util.MoreConstraints.java

public static <E> Constraint<E> cast(final Class<E> clazz) {
    return new Constraint<E>() {
        public E checkElement(E element) {
            return clazz.cast(element);
        }//from   w w  w.j a v  a 2s .com

        ;
    };
}

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From source file:com.clarkparsia.openrdf.ConstrainedGraph.java

/**
 * Return a {@link Constraint} which will only allow {@link OpenRdfUtil#isLiteralValid(org.openrdf.model.Literal) valid} literals into the graph.
 *
 * @return   a Constraint to enforce valid literals
 *//*from  w  ww .  ja va  2s  .c  om*/
public static Constraint<Statement> onlyValidLiterals() {
    return new Constraint<Statement>() {
        @Override
        public Statement checkElement(final Statement theStatement) {
            if (theStatement.getObject() instanceof Literal
                    && !OpenRdfUtil.isLiteralValid((Literal) theStatement.getObject())) {
                throw new StatementViolatedConstraintException(
                        theStatement.getObject() + " is not a well-formed literal value.");
            }

            return theStatement;
        }
    };
}

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