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.io.IOException;
  
  import org.apache.avro.AvroTypeException;
  import org.apache.avro.Conversion;
  import org.apache.avro.LogicalType;
  import org.apache.avro.Schema;
  import org.apache.avro.path.TracingAvroTypeException;
  import org.apache.avro.generic.GenericDatumWriter;
  import org.apache.avro.path.TracingClassCastException;
  import org.apache.avro.path.TracingNullPointException;
  import org.apache.avro.io.Encoder;
  import org.apache.avro.path.LocationStep;
  
  /**
   * {@link org.apache.avro.io.DatumWriter DatumWriter} for generated Java
   * classes.
   */
  public class SpecificDatumWriter<T> extends GenericDatumWriter<T> {
    public SpecificDatumWriter() {
      super(SpecificData.get());
    }
  
    public SpecificDatumWriter(Class<T> c) {
      super(SpecificData.get().getSchema(c), SpecificData.getForClass(c));
    }
  
    public SpecificDatumWriter(Schema schema) {
      super(schema, SpecificData.getForSchema(schema));
    }
  
    public SpecificDatumWriter(Schema root, SpecificData specificData) {
      super(root, specificData);
    }
  
    protected SpecificDatumWriter(SpecificData specificData) {
      super(specificData);
    }
  
    /** Returns the {@link SpecificData} implementation used by this writer. */
    public SpecificData getSpecificData() {
      return (SpecificData) getData();
    }
  
    @Override
    protected void writeEnum(Schema schema, Object datum, Encoder out) throws IOException {
      if (!(datum instanceof Enum))
        super.writeEnum(schema, datum, out); // punt to generic
      else
        out.writeEnum(((Enum) datum).ordinal());
    }
  
    @Override
    protected void writeString(Schema schema, Object datum, Encoder out) throws IOException {
      if (!(datum instanceof CharSequence) && getSpecificData().isStringable(datum.getClass())) {
        datum = datum.toString(); // convert to string
      }
      writeString(datum, out);
    }
  
    @Override
    protected void writeRecord(Schema schema, Object datum, Encoder out) throws IOException {
      if (datum instanceof SpecificRecordBase && this.getSpecificData().useCustomCoders()) {
        SpecificRecordBase d = (SpecificRecordBase) datum;
        if (d.hasCustomCoders()) {
          try {
            d.customEncode(out);
          } catch (NullPointerException e) {
            throw new TracingNullPointException(e, null, true);
          }
          return;
        }
      }
      super.writeRecord(schema, datum, out);
    }
  
    @Override
    protected void writeField(Object datum, Schema.Field f, Encoder out, Object state) throws IOException {
      if (datum instanceof SpecificRecordBase) {
        Conversion<?> conversion = ((SpecificRecordBase) datum).getConversion(f.pos());
        Schema fieldSchema = f.schema();
        LogicalType logicalType = fieldSchema.getLogicalType();
  
        Object value = getData().getField(datum, f.name(), f.pos());
        if (conversion != null && logicalType != null) {
          value = convert(fieldSchema, logicalType, conversion, value);
        }
  
        try {
          writeWithoutConversion(fieldSchema, value, out);
        } catch (TracingNullPointException | TracingClassCastException | TracingAvroTypeException e) {
          e.tracePath(new LocationStep(".", f.name()));
          throw e;
        } catch (AvroTypeException ate) {
          throw addAvroTypeMsg(ate, " in field '" + f.name() + "'");
        }
  
      } else {
        super.writeField(datum, f, out, state);
      }
    }
  }
  