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Reactive Relational Database Connectivity Driver Implementation for Postgresql

There is a newer version: 0.8.13.RELEASE

/*
 * Copyright 2017 the original author or authors.
 *
 * Licensed 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 io.r2dbc.postgresql.codec;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.r2dbc.postgresql.client.Parameter;
import io.r2dbc.postgresql.message.Format;
import io.r2dbc.postgresql.type.PostgresqlObjectId;
import io.r2dbc.postgresql.util.Assert;
import reactor.util.annotation.Nullable;

import java.util.Collections;
import java.util.function.Supplier;

import static io.r2dbc.postgresql.message.Format.FORMAT_TEXT;
import static io.r2dbc.postgresql.type.PostgresqlObjectId.INT2_ARRAY;

final class ShortArrayCodec extends AbstractArrayCodec {

    ShortArrayCodec(ByteBufAllocator byteBufAllocator) {
        super(byteBufAllocator, Short.class);
    }

    @Override
    public Parameter encodeNull() {
        return createNull(INT2_ARRAY, FORMAT_TEXT);
    }

    @Override
    public Iterable getDataTypes() {
        return Collections.singleton(INT2_ARRAY);
    }

    @Override
    Short doDecodeBinary(ByteBuf byteBuffer) {
        return byteBuffer.readShort();
    }

    @Override
    Short doDecodeText(String text) {
        return Short.parseShort(text);
    }

    @Override
    boolean doCanDecode(PostgresqlObjectId type, @Nullable Format format) {
        Assert.requireNonNull(type, "type must not be null");

        return INT2_ARRAY == type;
    }

    @Override
    Parameter encodeArray(Supplier encodedSupplier) {
        return create(INT2_ARRAY, FORMAT_TEXT, encodedSupplier);
    }

    @Override
    String doEncodeText(Short value) {
        Assert.requireNonNull(value, "value must not be null");

        return value.toString();
    }

}