Add codecs for DayOfWeek, Month, MonthDay, Period, Year, YearMonth.

[resolves #591][#608]

Author: steverigney

README.md

@@ -0,0 +1,28 @@
+/*
+ * 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.ByteBufAllocator;
+
+import java.time.DayOfWeek;
+
+final class DayOfWeekCodec extends IntegerCodecDelegate<DayOfWeek> {
+
+    DayOfWeekCodec(ByteBufAllocator byteBufAllocator) {
+        super(DayOfWeek.class, byteBufAllocator, DayOfWeek::getValue, DayOfWeek::of);
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/DayOfWeekCodec.java

@@ -128,6 +128,12 @@ private static List<Codec<?>> getDefaultCodecs(ByteBufAllocator byteBufAllocator
             new UrlCodec(byteBufAllocator),
             new UuidCodec(byteBufAllocator),
             new ZoneIdCodec(byteBufAllocator),
+            new DayOfWeekCodec(byteBufAllocator),
+            new MonthCodec(byteBufAllocator),
+            new MonthDayCodec(byteBufAllocator),
+            new PeriodCodec(byteBufAllocator),
+            new YearCodec(byteBufAllocator),
+            new YearMonthCodec(byteBufAllocator),
 
             // JSON
             new JsonCodec(byteBufAllocator, preferAttachedBuffers),

src/main/java/io/r2dbc/postgresql/codec/DefaultCodecs.java

@@ -0,0 +1,73 @@
+/*
+ * 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.EncodedParameter;
+import io.r2dbc.postgresql.message.Format;
+import io.r2dbc.postgresql.util.Assert;
+
+import java.util.function.Function;
+
+class IntegerCodecDelegate<T> extends AbstractCodec<T> {
+
+    private final IntegerCodec delegate;
+    private final Function<T, Integer> toIntegerConverter;
+    private final Function<Integer, T> fromIntegerConverter;
+
+    IntegerCodecDelegate(Class<T> type, ByteBufAllocator byteBufAllocator, Function<T,Integer> toIntegerConverter, Function<Integer, T> fromIntegerConverter) {
+        super(type);
+        this.delegate = new IntegerCodec(byteBufAllocator);
+        this.toIntegerConverter = toIntegerConverter;
+        this.fromIntegerConverter = fromIntegerConverter;
+    }
+
+    @Override
+    boolean doCanDecode(PostgresqlObjectId type, Format format) {
+        return delegate.doCanDecode(type, format);
+    }
+
+    @Override
+    T doDecode(ByteBuf buffer, PostgresTypeIdentifier dataType, Format format, Class<? extends T> type) {
+        final Integer number = delegate.doDecode(buffer, dataType, format, Integer.TYPE);
+        return fromIntegerConverter.apply(number);
+    }
+
+    @Override
+    EncodedParameter doEncode(T value) {
+        Assert.requireNonNull(value, "value must not be null");
+        return delegate.doEncode(toIntegerConverter.apply(value));
+    }
+
+    @Override
+    EncodedParameter doEncode(T value, PostgresTypeIdentifier dataType) {
+        Assert.requireNonNull(value, "value must not be null");
+        Assert.requireNonNull(dataType, "dataType must not be null");
+        return delegate.doEncode(toIntegerConverter.apply(value), dataType);
+    }
+
+    @Override
+    public Iterable<? extends PostgresTypeIdentifier> getDataTypes() {
+        return delegate.getDataTypes();
+    }
+
+    @Override
+    public EncodedParameter encodeNull() {
+        return delegate.encodeNull();
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/IntegerCodecDelegate.java

@@ -0,0 +1,28 @@
+/*
+ * 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.ByteBufAllocator;
+
+import java.time.Month;
+
+final class MonthCodec extends IntegerCodecDelegate<Month> {
+
+    MonthCodec(ByteBufAllocator byteBufAllocator) {
+        super(Month.class, byteBufAllocator, Month::getValue, Month::of);
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/MonthCodec.java

@@ -0,0 +1,28 @@
+/*
+ * 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.ByteBufAllocator;
+
+import java.time.MonthDay;
+
+final class MonthDayCodec extends StringCodecDelegate<MonthDay> {
+
+    MonthDayCodec(ByteBufAllocator byteBufAllocator) {
+        super(MonthDay.class, byteBufAllocator, MonthDay::toString, MonthDay::parse);
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/MonthDayCodec.java

@@ -0,0 +1,28 @@
+/*
+ * 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.ByteBufAllocator;
+
+import java.time.Period;
+
+final class PeriodCodec extends StringCodecDelegate<Period> {
+
+    PeriodCodec(ByteBufAllocator byteBufAllocator) {
+        super(Period.class, byteBufAllocator, Period::toString, Period::parse);
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/PeriodCodec.java

@@ -0,0 +1,28 @@
+/*
+ * 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.ByteBufAllocator;
+
+import java.time.Year;
+
+final class YearCodec extends IntegerCodecDelegate<Year> {
+
+    YearCodec(ByteBufAllocator byteBufAllocator) {
+        super(Year.class, byteBufAllocator, Year::getValue, Year::of);
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/YearCodec.java

@@ -0,0 +1,28 @@
+/*
+ * 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.ByteBufAllocator;
+
+import java.time.YearMonth;
+
+final class YearMonthCodec extends StringCodecDelegate<YearMonth> {
+
+    YearMonthCodec(ByteBufAllocator byteBufAllocator) {
+        super(YearMonth.class, byteBufAllocator, YearMonth::toString, YearMonth::parse);
+    }
+}

src/main/java/io/r2dbc/postgresql/codec/YearMonthCodec.java

@@ -1,4 +1,16 @@
 [
+  {
+    "name": "[Ljava.time.Period;",
+    "unsafeAllocated": true
+  },
+  {
+    "name": "[Ljava.time.MonthDay;",
+    "unsafeAllocated": true
+  },
+  {
+    "name": "[Ljava.time.YearMonth;",
+    "unsafeAllocated": true
+  },
   {
     "name": "[Lio.r2dbc.postgresql.codec.Box;",
     "unsafeAllocated": true