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package org.apache.maven.artifact.repository.metadata.io;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.util.Map;
import org.apache.maven.artifact.repository.metadata.Metadata;
/**
* Handles deserialization of metadata from some kind of textual format like XML.
*
* @author Benjamin Bentmann
*/
public interface MetadataReader
{
/**
* The key for the option to enable strict parsing. This option is of type {@link Boolean} and defaults to {@code
* true}. If {@code false}, unknown elements will be ignored instead of causing a failure.
*/
String IS_STRICT = "org.apache.maven.artifact.repository.metadata.io.isStrict";
/**
* Reads the metadata from the specified file.
*
* @param input The file to deserialize the metadata from, must not be {@code null}.
* @param options The options to use for deserialization, may be {@code null} to use the default values.
* @return The deserialized metadata, never {@code null}.
* @throws IOException If the metadata could not be deserialized.
* @throws MetadataParseException If the input format could not be parsed.
*/
Metadata read( File input, Map<String, ?> options )
throws IOException, MetadataParseException;
/**
* Reads the metadata from the specified character reader. The reader will be automatically closed before the method
* returns.
*
* @param input The reader to deserialize the metadata from, must not be {@code null}.
* @param options The options to use for deserialization, may be {@code null} to use the default values.
* @return The deserialized metadata, never {@code null}.
* @throws IOException If the metadata could not be deserialized.
* @throws MetadataParseException If the input format could not be parsed.
*/
Metadata read( Reader input, Map<String, ?> options )
throws IOException, MetadataParseException;
/**
* Reads the metadata from the specified byte stream. The stream will be automatically closed before the method
* returns.
*
* @param input The stream to deserialize the metadata from, must not be {@code null}.
* @param options The options to use for deserialization, may be {@code null} to use the default values.
* @return The deserialized metadata, never {@code null}.
* @throws IOException If the metadata could not be deserialized.
* @throws MetadataParseException If the input format could not be parsed.
*/
Metadata read( InputStream input, Map<String, ?> options )
throws IOException, MetadataParseException;
}
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