| /* |
| * 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. |
| */ |
| |
| #include <assert.h> |
| #include <errno.h> |
| #include <string.h> |
| |
| #include "avro/basics.h" |
| #include "avro/errors.h" |
| #include "avro/io.h" |
| #include "avro/legacy.h" |
| #include "avro/resolver.h" |
| #include "avro/schema.h" |
| #include "avro/value.h" |
| #include "avro_private.h" |
| |
| int avro_write_data(avro_writer_t writer, avro_schema_t writers_schema, |
| avro_datum_t datum) |
| { |
| int rval; |
| |
| check_param(EINVAL, writer, "writer"); |
| check_param(EINVAL, is_avro_datum(datum), "datum"); |
| |
| /* Only validate datum if a writer's schema is provided */ |
| if (is_avro_schema(writers_schema)) { |
| if (!avro_schema_datum_validate(writers_schema, datum)) { |
| avro_set_error("Datum doesn't validate against schema"); |
| return EINVAL; |
| } |
| |
| /* |
| * Some confusing terminology here. The "writers_schema" |
| * parameter is the schema we want to use to write the data |
| * into the "writer" buffer. Before doing that, we need to |
| * resolve the datum from its actual schema into this |
| * "writer" schema. For the purposes of that resolution, |
| * the writer schema is the datum's actual schema, and the |
| * reader schema is our eventual (when writing to the |
| * buffer) "writer" schema. |
| */ |
| |
| avro_schema_t datum_schema = avro_datum_get_schema(datum); |
| avro_value_iface_t *resolver = |
| avro_resolved_reader_new(datum_schema, writers_schema); |
| if (resolver == NULL) { |
| return EINVAL; |
| } |
| |
| avro_value_t value; |
| check(rval, avro_datum_as_value(&value, datum)); |
| |
| avro_value_t resolved; |
| rval = avro_resolved_reader_new_value(resolver, &resolved); |
| if (rval != 0) { |
| avro_value_decref(&value); |
| avro_value_iface_decref(resolver); |
| return rval; |
| } |
| |
| avro_resolved_reader_set_source(&resolved, &value); |
| rval = avro_value_write(writer, &resolved); |
| avro_value_decref(&resolved); |
| avro_value_decref(&value); |
| avro_value_iface_decref(resolver); |
| return rval; |
| } |
| |
| /* If we're writing using the datum's actual schema, we don't |
| * need a resolver. */ |
| |
| avro_value_t value; |
| check(rval, avro_datum_as_value(&value, datum)); |
| check(rval, avro_value_write(writer, &value)); |
| avro_value_decref(&value); |
| return 0; |
| } |