PredicateGroupEvaluator.java
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/*
* Decompiled with CFR 0_118.
*
* Could not load the following classes:
* javax.jcr.query.Row
* org.apache.felix.scr.annotations.Component
* org.slf4j.Logger
* org.slf4j.LoggerFactory
*/
package com.day.cq.search.eval;
import com.day.cq.search.Predicate;
import com.day.cq.search.PredicateGroup;
import com.day.cq.search.eval.AbstractPredicateEvaluator;
import com.day.cq.search.eval.EvaluationContext;
import com.day.cq.search.eval.PredicateEvaluator;
import com.day.cq.search.facets.FacetExtractor;
import java.util.ArrayList;
import java.util.Iterator;
import javax.jcr.query.Row;
import org.apache.felix.scr.annotations.Component;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Component(metatype=0, factory="com.day.cq.search.eval.PredicateEvaluator/group")
public class PredicateGroupEvaluator
extends AbstractPredicateEvaluator {
private static final Logger log = LoggerFactory.getLogger(PredicateGroupEvaluator.class);
protected static String FORCED_FILTERING = PredicateGroupEvaluator.class.getName() + "forced-filtering";
protected static String UNSUPPORTED_FILTER_WARNING_GIVEN = PredicateGroupEvaluator.class.getName() + ".filter-warning";
protected String getOpeningBracket() {
return "(";
}
protected String getClosingBracket() {
return ")";
}
@Override
public String getXPathExpression(Predicate p, EvaluationContext context) {
if (p == null || !(p instanceof PredicateGroup)) {
return null;
}
PredicateGroup group = (PredicateGroup)p;
if (this.isForcedFiltering(group, context)) {
return "";
}
ArrayList<String> expressions = new ArrayList<String>();
for (Predicate pred : group) {
PredicateEvaluator evaluator;
String ex;
if (pred.ignored() || (evaluator = context.getPredicateEvaluator(pred.getType())) == null || (ex = evaluator.getXPathExpression(pred, context)) == null || ex.length() <= 0) continue;
expressions.add(ex);
}
StringBuffer xpath = new StringBuffer();
if (expressions.size() > 0) {
if (group.isNegated()) {
xpath.append("not");
}
xpath.append(this.getOpeningBracket());
Iterator exIter = expressions.iterator();
while (exIter.hasNext()) {
xpath.append((String)exIter.next());
if (!exIter.hasNext()) continue;
if (group.allRequired()) {
xpath.append(" and ");
continue;
}
xpath.append(" or ");
}
xpath.append(this.getClosingBracket());
}
return xpath.toString();
}
@Override
public boolean includes(Predicate p, Row row, EvaluationContext context) {
boolean result;
if (p == null || !(p instanceof PredicateGroup)) {
return false;
}
PredicateGroup group = (PredicateGroup)p;
boolean bl = result = group.allRequired() ? this.andInclude(group, row, context) : this.orInclude(group, row, context);
return group.isNegated() ? !result : result;
}
private boolean andInclude(PredicateGroup group, Row row, EvaluationContext context) {
if (group.isEmpty()) {
return true;
}
boolean forcedFiltering = context.get(FORCED_FILTERING) != null;
for (Predicate p : group) {
PredicateEvaluator evaluator;
if (p.ignored() || (evaluator = context.getPredicateEvaluator(p.getType())) == null || !forcedFiltering && evaluator.canXpath(p, context) || evaluator.includes(p, row, context)) continue;
if (log.isTraceEnabled()) {
log.trace("AND group: predicate '" + p.getName() + "' (" + p.getType() + ") denied row " + context.getPath(row));
}
return false;
}
return true;
}
/*
* WARNING - Removed try catching itself - possible behaviour change.
*/
private boolean orInclude(PredicateGroup group, Row row, EvaluationContext context) {
boolean forcedFiltering;
int predicatesAsked = 0;
boolean inheritedForcedFiltering = context.get(FORCED_FILTERING) != null;
boolean bl = forcedFiltering = inheritedForcedFiltering || this.isForcedFiltering(group, context);
if (!inheritedForcedFiltering && forcedFiltering) {
context.put(FORCED_FILTERING, true);
}
try {
for (Predicate p : group) {
PredicateEvaluator evaluator;
if (p.ignored() || (evaluator = context.getPredicateEvaluator(p.getType())) == null || !forcedFiltering && evaluator.canXpath(p, context)) continue;
if (evaluator.includes(p, row, context)) {
if (forcedFiltering && context.get(UNSUPPORTED_FILTER_WARNING_GIVEN) == null && !evaluator.canFilter(p, context)) {
log.warn("Search result might be incorrect - forcing filtering with a PredicateEvaluator that does NOT support filtering: '" + p.getPath() + "' = " + evaluator.getClass().getName());
context.put(UNSUPPORTED_FILTER_WARNING_GIVEN, true);
}
boolean bl2 = true;
return bl2;
}
++predicatesAsked;
}
if (predicatesAsked == 0) {
boolean i$ = true;
return i$;
}
if (log.isTraceEnabled()) {
log.trace("OR group: no predicate in group '" + group.getName() + "' accepted row " + context.getPath(row));
}
boolean i$ = false;
return i$;
}
finally {
if (!inheritedForcedFiltering && forcedFiltering) {
context.put(FORCED_FILTERING, null);
}
}
}
protected boolean isForcedFiltering(PredicateGroup group, EvaluationContext context) {
if (group.allRequired()) {
return false;
}
for (Predicate p : group) {
PredicateEvaluator evaluator;
if (p.ignored() || (evaluator = context.getPredicateEvaluator(p.getType())) == null || evaluator.canXpath(p, context)) continue;
return true;
}
return false;
}
@Override
public boolean canXpath(Predicate predicate, EvaluationContext context) {
if (predicate == null || !(predicate instanceof PredicateGroup)) {
return false;
}
PredicateGroup group = (PredicateGroup)predicate;
for (Predicate p : group) {
PredicateEvaluator evaluator;
if (p.ignored() || (evaluator = context.getPredicateEvaluator(p.getType())) == null || evaluator.canXpath(p, context)) continue;
return false;
}
return true;
}
@Override
public boolean canFilter(Predicate predicate, EvaluationContext context) {
if (predicate == null || !(predicate instanceof PredicateGroup)) {
return false;
}
PredicateGroup group = (PredicateGroup)predicate;
for (Predicate p : group) {
PredicateEvaluator evaluator;
if (p.ignored() || (evaluator = context.getPredicateEvaluator(p.getType())) == null || evaluator.canFilter(p, context)) continue;
return false;
}
return true;
}
public String listFilteringPredicates(PredicateGroup group, EvaluationContext context) {
StringBuffer result = new StringBuffer();
boolean groupHasForcedFiltering = this.isForcedFiltering(group, context);
for (Predicate p : group) {
PredicateEvaluator evaluator;
if (p.ignored()) continue;
if (groupHasForcedFiltering) {
if (result.length() > 0) {
result.append(", ");
}
if ((evaluator = context.getPredicateEvaluator(p.getType())) != null && !evaluator.canFilter(p, context)) {
result.append("WARN - NO FILTERING SUPPORT: ");
}
result.append("{").append(p.toString()).append("}");
continue;
}
if (p instanceof PredicateGroup) {
if (result.length() > 0) {
result.append(", ");
}
result.append(this.listFilteringPredicates((PredicateGroup)p, context));
continue;
}
evaluator = context.getPredicateEvaluator(p.getType());
if (evaluator == null || evaluator.canXpath(p, context)) continue;
if (result.length() > 0) {
result.append(", ");
}
result.append("{").append(p.toString()).append("}");
}
return result.toString();
}
@Override
public FacetExtractor getFacetExtractor(Predicate predicate, EvaluationContext context) {
return null;
}
}