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[FLINK-10028][core] Introduce reusable ByteArrayData[Input/Output]Vie…
…w as adapter between Data[Input/Output]View and byte-arrays
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flink-core/src/main/java/org/apache/flink/core/memory/ByteArrayDataInputView.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| /* | ||
| * 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: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. | ||
| */ | ||
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| package org.apache.flink.core.memory; | ||
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| import javax.annotation.Nonnull; | ||
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| /** | ||
| * Reusable adapter to {@link DataInputView} that operates on given byte-arrays. | ||
| */ | ||
| public class ByteArrayDataInputView extends DataInputViewStreamWrapper { | ||
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| @Nonnull | ||
| private final ByteArrayInputStreamWithPos inStreamWithPos; | ||
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| public ByteArrayDataInputView() { | ||
| super(new ByteArrayInputStreamWithPos()); | ||
| this.inStreamWithPos = (ByteArrayInputStreamWithPos) in; | ||
| } | ||
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| public ByteArrayDataInputView(@Nonnull byte[] buffer) { | ||
| this(buffer, 0, buffer.length); | ||
| } | ||
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| public ByteArrayDataInputView(@Nonnull byte[] buffer, int offset, int length) { | ||
| this(); | ||
| setData(buffer, offset, length); | ||
| } | ||
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| public int getPosition() { | ||
| return inStreamWithPos.getPosition(); | ||
| } | ||
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| public void setPosition(int pos) { | ||
| inStreamWithPos.setPosition(pos); | ||
| } | ||
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| public void setData(@Nonnull byte[] buffer, int offset, int length) { | ||
| inStreamWithPos.setBuffer(buffer, offset, length); | ||
| } | ||
| } |
61 changes: 61 additions & 0 deletions
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flink-core/src/main/java/org/apache/flink/core/memory/ByteArrayDataOutputView.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| /* | ||
| * 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: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. | ||
| */ | ||
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| package org.apache.flink.core.memory; | ||
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| import javax.annotation.Nonnull; | ||
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| /** | ||
| * Adapter to {@link DataOutputView} that operates on a byte-array and offers read/write access to the current position. | ||
| */ | ||
| public class ByteArrayDataOutputView extends DataOutputViewStreamWrapper { | ||
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| @Nonnull | ||
| private final ByteArrayOutputStreamWithPos outputStreamWithPos; | ||
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| public ByteArrayDataOutputView() { | ||
| this(64); | ||
| } | ||
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| public ByteArrayDataOutputView(int initialSize) { | ||
| super(new ByteArrayOutputStreamWithPos(initialSize)); | ||
| this.outputStreamWithPos = (ByteArrayOutputStreamWithPos) out; | ||
| } | ||
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| public void reset() { | ||
| outputStreamWithPos.reset(); | ||
| } | ||
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| @Nonnull | ||
| public byte[] toByteArray() { | ||
| return outputStreamWithPos.toByteArray(); | ||
| } | ||
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| public int getPosition() { | ||
| return outputStreamWithPos.getPosition(); | ||
| } | ||
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| public void setPosition(int position) { | ||
| outputStreamWithPos.setPosition(position); | ||
| } | ||
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| @Nonnull | ||
| public byte[] getInternalBufferReference() { | ||
| return outputStreamWithPos.getBuf(); | ||
| } | ||
| } |
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