content: /*
   * 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
   *
   *     https://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.specific;
  
  import java.lang.reflect.Constructor;
  
  import org.apache.avro.Schema;
  import org.apache.avro.data.ErrorBuilder;
  import org.apache.avro.data.RecordBuilderBase;
  
  /**
   * Abstract base class for specific ErrorBuilder implementations. Not
   * thread-safe.
   */
  abstract public class SpecificErrorBuilderBase<T extends SpecificExceptionBase> extends RecordBuilderBase<T>
      implements ErrorBuilder<T> {
    private Constructor<T> errorConstructor;
    private Object value;
    private boolean hasValue;
    private Throwable cause;
    private boolean hasCause;
  
    /**
     * Creates a SpecificErrorBuilderBase for building errors of the given type.
     * 
     * @param schema the schema associated with the error class.
     */
    protected SpecificErrorBuilderBase(Schema schema) {
      super(schema, SpecificData.get());
    }
  
    /**
     * Creates a SpecificErrorBuilderBase for building errors of the given type.
     * 
     * @param schema the schema associated with the error class.
     * @param model  the SpecificData instance associated with the error class
     */
    protected SpecificErrorBuilderBase(Schema schema, SpecificData model) {
      super(schema, model);
    }
  
    /**
     * SpecificErrorBuilderBase copy constructor.
     * 
     * @param other SpecificErrorBuilderBase instance to copy.
     */
    protected SpecificErrorBuilderBase(SpecificErrorBuilderBase<T> other) {
      super(other, SpecificData.get());
      this.errorConstructor = other.errorConstructor;
      this.value = other.value;
      this.hasValue = other.hasValue;
      this.cause = other.cause;
      this.hasCause = other.hasCause;
    }
  
    /**
     * Creates a SpecificErrorBuilderBase by copying an existing error instance.
     * 
     * @param other the error instance to copy.
     */
    protected SpecificErrorBuilderBase(T other) {
      super(other.getSchema(), SpecificData.get());
  
      Object otherValue = other.getValue();
      if (otherValue != null) {
        setValue(otherValue);
      }
  
      Throwable otherCause = other.getCause();
      if (otherCause != null) {
        setCause(otherCause);
      }
    }
  
    @Override
    public Object getValue() {
      return value;
    }
  
    @Override
    public SpecificErrorBuilderBase<T> setValue(Object value) {
      this.value = value;
      hasValue = true;
      return this;
    }
  
    @Override
    public boolean hasValue() {
      return hasValue;
    }
  
    @Override
    public SpecificErrorBuilderBase<T> clearValue() {
      value = null;
      hasValue = false;
      return this;
    }
  
    @Override
    public Throwable getCause() {
      return cause;
    }
  
    @Override
    public SpecificErrorBuilderBase<T> setCause(Throwable cause) {
      this.cause = cause;
      hasCause = true;
      return this;
    }
  
    @Override
    public boolean hasCause() {
      return hasCause;
    }
  
    @Override
    public SpecificErrorBuilderBase<T> clearCause() {
      cause = null;
      hasCause = false;
      return this;
    }
  }
  