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package org.apache.tuscany.sca.domain.search.impl;
import java.util.HashMap;
import java.util.LinkedList;
import org.apache.lucene.document.Document;
import org.apache.lucene.search.Query;
import org.apache.tuscany.sca.domain.search.Result;
import org.apache.tuscany.sca.domain.search.ResultFactory;
import org.apache.tuscany.sca.domain.search.ResultProcessor;
public class ResultProcessorList extends LinkedList<ResultProcessor> implements ResultProcessor {
private static final long serialVersionUID = 7147307292452694895L;
private ResultFactoryList resultFactoryList;
private HashMap<String, ResultHashMap> resultRoots = new HashMap<String, ResultHashMap>();
public ResultProcessorList(ResultFactoryList resultFactoryList) {
this.resultFactoryList = resultFactoryList;
}
public Result process(Document document, Query query, Result result) {
if (result == null) {
result = this.resultFactoryList.createResult(document);
}
if (result == null) {
return null;
}
ResultHashMap resultHashMap;
String parent = document.get(SearchFields.PARENT_FIELD);
if (parent == null) {
resultHashMap = new ResultHashMap(result);
resultRoots.put(result.getName(), resultHashMap);
} else {
ParentField parentField = new ParentField(parent);
HashMap<String, ResultHashMap> current = this.resultRoots;
Result currentResult = null;
int elementsCount = parentField.getElementsCount();
for (int i = 0 ; i < elementsCount ; i++) {
String actualURI = parentField.getElementURI(i);
String type = parentField.getElementType(i);
if (actualURI.length() > 0) {
ResultHashMap actualResultHashMap = current.get(actualURI);
if (actualResultHashMap == null) {
ResultHashMap aux = new ResultHashMap(type, parentField.getElementName(i));
if (current.put(actualURI, aux) == null && currentResult != null) {
currentResult.addContent(aux.result);
}
current = aux;
currentResult = aux.result;
} else {
current = actualResultHashMap;
currentResult = actualResultHashMap.result;
}
}
}
resultHashMap = current.get(result.getName());
if (resultHashMap == null) {
resultHashMap = new ResultHashMap(result);
current.put(result.getName(), resultHashMap);
if (currentResult != null) {
currentResult.addContent(result);
}
}
}
for (ResultProcessor processor : this) {
result = processor.process(document, query, result);
}
resultHashMap.result = result;
return result;
}
public Result[] getResultRoots() {
int size = this.resultRoots.size();
if (size == 0) {
return new Result[0];
}
Result[] res = new Result[size];
int i = 0;
for (ResultHashMap resultHashMap : this.resultRoots.values()) {
res[i++] = resultHashMap.result;
}
return res;
}
private Result createResult(String type, String name) {
for (ResultFactory<? extends Result> actualResultFactory : this.resultFactoryList) {
if (type.equals(actualResultFactory.getType())) {
return actualResultFactory.createResult(name);
}
}
throw new IllegalArgumentException();
}
private class ResultHashMap extends HashMap<String, ResultHashMap> {
private static final long serialVersionUID = 7982561264440904411L;
Result result;
ResultHashMap(String type, String name) {
this.result = createResult(type, name);
}
ResultHashMap(Result result) {
this.result = result;
}
}
}
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