/** Rewrite left and right */
@Override
public void visit(final OpUnion opUnion) {
if (LOG.isDebugEnabled()) {
LOG.debug("Starting visiting OpUnion");
}
final OpRewriter rewriter = new OpRewriter(securityEvaluator, graphIRI);
addOp(OpUnion.create(rewriteOp2(opUnion, rewriter), rewriter.getResult()));
}
/**
* rewrite source to dest and returns dest
*
* @param source
* @param dest
* @return the rewritten op.
*/
private OpN rewriteOpN(final OpN source, final OpN dest) {
final OpRewriter rewriter = new OpRewriter(securityEvaluator, graphIRI);
for (final Op o : source.getElements()) {
o.visit(rewriter.reset());
dest.add(rewriter.getResult());
}
return dest;
}
/** rewrites the subop of graph. */
@Override
public void visit(final OpGraph opGraph) {
if (LOG.isDebugEnabled()) {
LOG.debug("Starting visiting OpGraph");
}
final OpRewriter rewriter = new OpRewriter(securityEvaluator, opGraph.getNode());
opGraph.getSubOp().visit(rewriter);
addOp(new OpGraph(opGraph.getNode(), rewriter.getResult()));
}
/**
* rewrites the left and right parts of the op2 the left part is returned the right part is placed
* in the rewriter
*
* @param op2
* @param rewriter
* @return the rewritten op.
*/
private Op rewriteOp2(final Op2 op2, final OpRewriter rewriter) {
op2.getLeft().visit(rewriter.reset());
final Op left = rewriter.getResult();
op2.getRight().visit(rewriter.reset());
return left;
}
/**
* Rewrites the subop of op1 and returns the result.
*
* @param op1
* @return the rewritten op.
*/
private Op rewriteOp1(final Op1 op1) {
final OpRewriter rewriter = new OpRewriter(securityEvaluator, graphIRI);
op1.getSubOp().visit(rewriter);
return rewriter.getResult();
}