/*
* Copyright (c) 2014, Francis Galiegue (fgaliegue@gmail.com)
*
* This software is dual-licensed under:
*
* - the Lesser General Public License (LGPL) version 3.0 or, at your option, any
* later version;
* - the Apache Software License (ASL) version 2.0.
*
* The text of this file and of both licenses is available at the root of this
* project or, if you have the jar distribution, in directory META-INF/, under
* the names LGPL-3.0.txt and ASL-2.0.txt respectively.
*
* Direct link to the sources:
*
* - LGPL 3.0: https://www.gnu.org/licenses/lgpl-3.0.txt
* - ASL 2.0: http://www.apache.org/licenses/LICENSE-2.0.txt
*/
package com.github.fge.jsonschema.processors.digest;
import com.fasterxml.jackson.databind.JsonNode;
import com.github.fge.jackson.NodeType;
import com.github.fge.jsonschema.core.exceptions.ProcessingException;
import com.github.fge.jsonschema.core.processing.Processor;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.core.util.Dictionary;
import com.github.fge.jsonschema.keyword.digest.Digester;
import com.github.fge.jsonschema.library.Library;
import com.github.fge.jsonschema.processors.data.SchemaContext;
import com.github.fge.jsonschema.processors.data.SchemaDigest;
import com.github.fge.jsonschema.processors.validation.ValidationChain;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import java.util.Map;
/**
* The schema digester
*
* <p>This processor is called by a {@link ValidationChain} after it has made
* sure that the schema is syntactically valid.</p>
*/
public final class SchemaDigester
implements Processor<SchemaContext, SchemaDigest>
{
private final ListMultimap<NodeType, String> typeMap
= ArrayListMultimap.create();
private final Map<String, Digester> digesterMap = Maps.newHashMap();
public SchemaDigester(final Library library)
{
this(library.getDigesters());
}
public SchemaDigester(final Dictionary<Digester> dict)
{
String keyword;
Digester digester;
final Map<String, Digester> map = dict.entries();
for (final Map.Entry<String, Digester> entry: map.entrySet()) {
keyword = entry.getKey();
digester = entry.getValue();
digesterMap.put(keyword, digester);
for (final NodeType type: digester.supportedTypes())
typeMap.put(type, keyword);
}
}
@Override
public SchemaDigest process(final ProcessingReport report,
final SchemaContext input)
throws ProcessingException
{
final JsonNode schema = input.getSchema().getNode();
final NodeType type = input.getInstanceType();
final Map<String, JsonNode> map = Maps.newHashMap(buildDigests(schema));
map.keySet().retainAll(typeMap.get(type));
return new SchemaDigest(input, map);
}
private Map<String, JsonNode> buildDigests(final JsonNode schema)
{
final ImmutableMap.Builder<String, JsonNode> builder
= ImmutableMap.builder();
final Map<String, Digester> map = Maps.newHashMap(digesterMap);
map.keySet().retainAll(Sets.newHashSet(schema.fieldNames()));
for (final Map.Entry<String, Digester> entry: map.entrySet())
builder.put(entry.getKey(), entry.getValue().digest(schema));
return builder.build();
}
@Override
public String toString()
{
return "schema digester";
}
}