org.apache.avro.SchemaValidatorBuilder Maven / Gradle / Ivy
/**
* 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.
*/
package org.apache.avro;
/**
*
* A Builder for creating SchemaValidators.
*
*/
public final class SchemaValidatorBuilder {
private SchemaValidationStrategy strategy;
public SchemaValidatorBuilder strategy(SchemaValidationStrategy strategy) {
this.strategy = strategy;
return this;
}
/**
* Use a strategy that validates that a schema can be used to read existing
* schema(s) according to the Avro default schema resolution.
*/
public SchemaValidatorBuilder canReadStrategy() {
this.strategy = new ValidateCanRead();
return this;
}
/**
* Use a strategy that validates that a schema can be read by existing
* schema(s) according to the Avro default schema resolution.
*/
public SchemaValidatorBuilder canBeReadStrategy() {
this.strategy = new ValidateCanBeRead();
return this;
}
/**
* Use a strategy that validates that a schema can read existing schema(s),
* and vice-versa, according to the Avro default schema resolution.
*/
public SchemaValidatorBuilder mutualReadStrategy() {
this.strategy = new ValidateMutualRead();
return this;
}
public SchemaValidator validateLatest() {
valid();
return new ValidateLatest(strategy);
}
public SchemaValidator validateAll() {
valid();
return new ValidateAll(strategy);
}
private void valid() {
if(null == strategy) {
throw new AvroRuntimeException("SchemaValidationStrategy not specified in builder");
}
}
}