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/*******************************************************************************
* Cloud Foundry
* Copyright (c) [2009-2016] Pivotal Software, Inc. All Rights Reserved.
*
* This product is licensed to you under the Apache License, Version 2.0 (the "License").
* You may not use this product except in compliance with the License.
*
* This product includes a number of subcomponents with
* separate copyright notices and license terms. Your use of these
* subcomponents is subject to the terms and conditions of the
* subcomponent's license, as noted in the LICENSE file.
*******************************************************************************/
package org.cloudfoundry.identity.uaa.resources;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.PathNotFoundException;
import org.cloudfoundry.identity.uaa.util.JsonUtils;
import org.cloudfoundry.identity.uaa.util.MapCollector;
import org.springframework.util.Assert;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import static java.util.Arrays.asList;
public class SearchResultsFactory {
public static SearchResults> cropAndBuildSearchResultFrom(
List input,
int startIndex,
int count,
int total,
String[] attributes,
List schemas) {
if (startIndex <= 0) {
//must start with 1
startIndex = 1;
}
if ( (startIndex -1) >= input.size() ) {
//start index is past the last result
count = 0;
}
if ( ((startIndex-1)+count) >= input.size()) {
//we're past the last result
count = input.size() - (startIndex - 1);
}
count = Math.max(count, 0);
input = count>0 ? input.subList(startIndex-1, startIndex-1+count) : Collections.emptyList();
return buildSearchResultFrom(
input,
startIndex,
count,
total,
attributes,
new SimpleAttributeNameMapper(Collections.emptyMap()),
schemas);
}
public static SearchResults> buildSearchResultFrom(
List input,
int startIndex,
int count,
int total,
String[] attributes,
List schemas) {
return buildSearchResultFrom(
input,
startIndex,
count,
total,
attributes,
new SimpleAttributeNameMapper(Collections.emptyMap()),
schemas);
}
public static SearchResults> buildSearchResultFrom(
List input,
int startIndex,
int count,
int total,
String[] attributes,
AttributeNameMapper mapper,
List schemas) {
Assert.state(input.size() <= count,
"Cannot build search results from parent list. Use subList before you call this method.");
Map jsonPaths = asList(attributes).stream()
.collect(new MapCollector<>(attribute -> attribute, attribute -> {
String jsonPath = "$." + mapper.mapToInternal(attribute);
return JsonPath.compile(jsonPath);
}));
Collection> results = new ArrayList<>();
for (T object : input) {
Map map = new LinkedHashMap<>();
String serializedObject = JsonUtils.writeValueAsString(object);
for (Map.Entry attribute : jsonPaths.entrySet()) {
try {
Object value = attribute.getValue().read(serializedObject);
map.put(attribute.getKey(), value);
} catch (PathNotFoundException e) {
map.put(attribute.getKey(), null);
}
}
results.add(map);
}
return new SearchResults<>(schemas, results, startIndex, count, total);
}
}
