| /* |
| * 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.asterix.bad.metadata; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInput; |
| import java.io.DataInputStream; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.asterix.builders.OrderedListBuilder; |
| import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider; |
| import org.apache.asterix.metadata.MetadataException; |
| import org.apache.asterix.metadata.entitytupletranslators.AbstractTupleTranslator; |
| import org.apache.asterix.om.base.AOrderedList; |
| import org.apache.asterix.om.base.ARecord; |
| import org.apache.asterix.om.base.AString; |
| import org.apache.asterix.om.base.IACursor; |
| import org.apache.asterix.om.types.AOrderedListType; |
| import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.hyracks.dataflow.common.data.accessors.ITupleReference; |
| |
| /** |
| * Translates a Procedure metadata entity to an ITupleReference and vice versa. |
| */ |
| public class ProcedureTupleTranslator extends AbstractTupleTranslator<Procedure> { |
| // Field indexes of serialized Procedure in a tuple. |
| // First key field. |
| public static final int PROCEDURE_DATAVERSENAME_TUPLE_FIELD_INDEX = 0; |
| // Second key field. |
| public static final int PROCEDURE_PROCEDURE_NAME_TUPLE_FIELD_INDEX = 1; |
| // Third key field. |
| public static final int PROCEDURE_ARITY_TUPLE_FIELD_INDEX = 2; |
| |
| // Payload field containing serialized Procedure. |
| public static final int PROCEDURE_PAYLOAD_TUPLE_FIELD_INDEX = 3; |
| |
| @SuppressWarnings("unchecked") |
| private ISerializerDeserializer<ARecord> recordSerDes = SerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BADMetadataRecordTypes.PROCEDURE_RECORDTYPE); |
| |
| protected ProcedureTupleTranslator(boolean getTuple) { |
| super(getTuple, BADMetadataIndexes.NUM_FIELDS_PROCEDURE_IDX); |
| } |
| |
| @Override |
| public Procedure getMetadataEntityFromTuple(ITupleReference frameTuple) throws HyracksDataException { |
| byte[] serRecord = frameTuple.getFieldData(PROCEDURE_PAYLOAD_TUPLE_FIELD_INDEX); |
| int recordStartOffset = frameTuple.getFieldStart(PROCEDURE_PAYLOAD_TUPLE_FIELD_INDEX); |
| int recordLength = frameTuple.getFieldLength(PROCEDURE_PAYLOAD_TUPLE_FIELD_INDEX); |
| ByteArrayInputStream stream = new ByteArrayInputStream(serRecord, recordStartOffset, recordLength); |
| DataInput in = new DataInputStream(stream); |
| ARecord procedureRecord = recordSerDes.deserialize(in); |
| return createProcedureFromARecord(procedureRecord); |
| } |
| |
| private Procedure createProcedureFromARecord(ARecord procedureRecord) { |
| String dataverseName = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_DATAVERSENAME_FIELD_INDEX)).getStringValue(); |
| String procedureName = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_NAME_FIELD_INDEX)).getStringValue(); |
| String arity = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_ARITY_FIELD_INDEX)).getStringValue(); |
| |
| IACursor cursor = ((AOrderedList) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_PARAM_LIST_FIELD_INDEX)).getCursor(); |
| List<String> params = new ArrayList<>(); |
| while (cursor.next()) { |
| params.add(((AString) cursor.get()).getStringValue()); |
| } |
| |
| String returnType = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_RETURN_TYPE_FIELD_INDEX)) |
| .getStringValue(); |
| |
| String definition = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_DEFINITION_FIELD_INDEX)) |
| .getStringValue(); |
| |
| String language = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_LANGUAGE_FIELD_INDEX)) |
| .getStringValue(); |
| |
| String duration = ((AString) procedureRecord |
| .getValueByPos(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_DURATION_FIELD_INDEX)) |
| .getStringValue(); |
| |
| return new Procedure(dataverseName, procedureName, Integer.parseInt(arity), params, returnType, definition, |
| language, duration); |
| |
| } |
| |
| @Override |
| public ITupleReference getTupleFromMetadataEntity(Procedure procedure) |
| throws HyracksDataException, MetadataException { |
| // write the key in the first 2 fields of the tuple |
| tupleBuilder.reset(); |
| aString.setValue(procedure.getEntityId().getDataverse()); |
| stringSerde.serialize(aString, tupleBuilder.getDataOutput()); |
| tupleBuilder.addFieldEndOffset(); |
| aString.setValue(procedure.getEntityId().getEntityName()); |
| stringSerde.serialize(aString, tupleBuilder.getDataOutput()); |
| tupleBuilder.addFieldEndOffset(); |
| aString.setValue(procedure.getArity() + ""); |
| stringSerde.serialize(aString, tupleBuilder.getDataOutput()); |
| tupleBuilder.addFieldEndOffset(); |
| |
| // write the pay-load in the fourth field of the tuple |
| |
| recordBuilder.reset(BADMetadataRecordTypes.PROCEDURE_RECORDTYPE); |
| |
| // write field 0 |
| fieldValue.reset(); |
| aString.setValue(procedure.getEntityId().getDataverse()); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_DATAVERSENAME_FIELD_INDEX, fieldValue); |
| |
| // write field 1 |
| fieldValue.reset(); |
| aString.setValue(procedure.getEntityId().getEntityName()); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_NAME_FIELD_INDEX, fieldValue); |
| |
| // write field 2 |
| fieldValue.reset(); |
| aString.setValue(procedure.getArity() + ""); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_ARITY_FIELD_INDEX, fieldValue); |
| |
| // write field 3 |
| OrderedListBuilder listBuilder = new OrderedListBuilder(); |
| ArrayBackedValueStorage itemValue = new ArrayBackedValueStorage(); |
| listBuilder.reset((AOrderedListType) BADMetadataRecordTypes.PROCEDURE_RECORDTYPE |
| .getFieldTypes()[BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_PARAM_LIST_FIELD_INDEX]); |
| for (String param : procedure.getParams()) { |
| itemValue.reset(); |
| aString.setValue(param); |
| stringSerde.serialize(aString, itemValue.getDataOutput()); |
| listBuilder.addItem(itemValue); |
| } |
| fieldValue.reset(); |
| listBuilder.write(fieldValue.getDataOutput(), true); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_PARAM_LIST_FIELD_INDEX, fieldValue); |
| |
| // write field 4 |
| fieldValue.reset(); |
| aString.setValue(procedure.getReturnType()); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_RETURN_TYPE_FIELD_INDEX, fieldValue); |
| |
| // write field 5 |
| fieldValue.reset(); |
| aString.setValue(procedure.getBody()); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_DEFINITION_FIELD_INDEX, fieldValue); |
| |
| // write field 6 |
| fieldValue.reset(); |
| aString.setValue(procedure.getLanguage()); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_LANGUAGE_FIELD_INDEX, fieldValue); |
| |
| // write field 7 |
| fieldValue.reset(); |
| aString.setValue(procedure.getDuration()); |
| stringSerde.serialize(aString, fieldValue.getDataOutput()); |
| recordBuilder.addField(BADMetadataRecordTypes.PROCEDURE_ARECORD_PROCEDURE_DURATION_FIELD_INDEX, fieldValue); |
| |
| // write record |
| recordBuilder.write(tupleBuilder.getDataOutput(), true); |
| tupleBuilder.addFieldEndOffset(); |
| |
| tuple.reset(tupleBuilder.getFieldEndOffsets(), tupleBuilder.getByteArray()); |
| return tuple; |
| } |
| |
| } |