001/*
002 * (C) Copyright 2018 Nuxeo (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     pierre
018 */
019package org.nuxeo.runtime.avro;
020
021import java.util.Arrays;
022
023import org.apache.avro.Schema;
024
025/**
026 * The base class for any AvroSchemaFactory.<br>
027 *
028 * @since 10.2
029 */
030public abstract class AvroSchemaFactory<T> {
031
032    protected static final Schema NULL_SCHEMA = Schema.create(Schema.Type.NULL);
033
034    protected final AvroSchemaFactoryContext context;
035
036    public AvroSchemaFactory(AvroSchemaFactoryContext context) {
037        this.context = context;
038    }
039
040    public abstract Schema createSchema(T input);
041
042    public abstract String getName(T input);
043
044    public String getQualifiedName(T input) {
045        return getName(input);
046    }
047
048    protected Schema nullable(Schema schema) {
049        return Schema.createUnion(Arrays.asList(NULL_SCHEMA, schema));
050    }
051
052}