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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.query.profile;
import com.yahoo.search.query.profile.types.FieldDescription;
import java.util.List;
/**
* @author bratseth
*/
final class FieldDescriptionQueryProfileVisitor extends QueryProfileVisitor {
/** The result, or null if none */
private FieldDescription result = null;
private final List<String> name;
private int nameIndex=-1;
private boolean enteringContent=false;
public FieldDescriptionQueryProfileVisitor(List<String> name) {
this.name=name;
}
@Override
public String getLocalKey() {
return name.get(nameIndex);
}
@Override
public boolean enter(String name) {
if (nameIndex+2<this.name.size()) {
nameIndex++;
enteringContent=true;
}
else {
enteringContent=false;
}
return enteringContent;
}
@Override
public void leave(String name) {
nameIndex--;
}
@Override
public void onValue(String name,
Object value,
DimensionBinding binding,
QueryProfile owner,
DimensionValues variant) {
}
@Override
public void onQueryProfile(QueryProfile profile,
DimensionBinding binding,
QueryProfile owner,
DimensionValues variant) {
if (enteringContent) return; // not at leaf query profile
if (profile.getType() == null) return;
result = profile.getType().getField(name.get(name.size() - 1));
}
@Override
public boolean isDone() {
return result != null;
}
public FieldDescription result() { return result; }
@Override
public String toString() {
return "a query profile type visitor (hash " + hashCode() + ") with current value " + result;
}
}
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