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-rw-r--r--java/src/main/java/com/google/protobuf/LazyFieldLite.java176
1 files changed, 0 insertions, 176 deletions
diff --git a/java/src/main/java/com/google/protobuf/LazyFieldLite.java b/java/src/main/java/com/google/protobuf/LazyFieldLite.java
deleted file mode 100644
index 1fc80e8..0000000
--- a/java/src/main/java/com/google/protobuf/LazyFieldLite.java
+++ /dev/null
@@ -1,176 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc. All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-// * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package com.google.protobuf;
-
-import java.io.IOException;
-
-/**
- * LazyFieldLite encapsulates the logic of lazily parsing message fields. It stores
- * the message in a ByteString initially and then parse it on-demand.
- *
- * LazyField is thread-compatible e.g. concurrent read are safe, however,
- * synchronizations are needed under read/write situations.
- *
- * This class is internal implementation detail, so you don't need to use it directly.
- *
- * @author xiangl@google.com (Xiang Li)
- */
-public class LazyFieldLite {
- private ByteString bytes;
- private ExtensionRegistryLite extensionRegistry;
- private volatile boolean isDirty = false;
-
- protected volatile MessageLite value;
-
- public LazyFieldLite(ExtensionRegistryLite extensionRegistry, ByteString bytes) {
- this.extensionRegistry = extensionRegistry;
- this.bytes = bytes;
- }
-
- public LazyFieldLite() {
- }
-
- public static LazyFieldLite fromValue(MessageLite value) {
- LazyFieldLite lf = new LazyFieldLite();
- lf.setValue(value);
- return lf;
- }
-
- public boolean containsDefaultInstance() {
- return value == null && bytes == null;
- }
-
- public void clear() {
- bytes = null;
- value = null;
- extensionRegistry = null;
- isDirty = true;
- }
-
- /**
- * Returns message instance. At first time, serialized data is parsed by
- * {@code defaultInstance.getParserForType()}.
- *
- * @param defaultInstance its message's default instance. It's also used to get parser for the
- * message type.
- */
- public MessageLite getValue(MessageLite defaultInstance) {
- ensureInitialized(defaultInstance);
- return value;
- }
-
- /**
- * LazyField is not thread-safe for write access. Synchronizations are needed
- * under read/write situations.
- */
- public MessageLite setValue(MessageLite value) {
- MessageLite originalValue = this.value;
- this.value = value;
- bytes = null;
- isDirty = true;
- return originalValue;
- }
-
- public void merge(LazyFieldLite value) {
- if (value.containsDefaultInstance()) {
- return;
- }
-
- if (bytes == null) {
- this.bytes = value.bytes;
- } else {
- this.bytes.concat(value.toByteString());
- }
- isDirty = false;
- }
-
- public void setByteString(ByteString bytes, ExtensionRegistryLite extensionRegistry) {
- this.bytes = bytes;
- this.extensionRegistry = extensionRegistry;
- isDirty = false;
- }
-
- public ExtensionRegistryLite getExtensionRegistry() {
- return extensionRegistry;
- }
-
- /**
- * Due to the optional field can be duplicated at the end of serialized
- * bytes, which will make the serialized size changed after LazyField
- * parsed. Be careful when using this method.
- */
- public int getSerializedSize() {
- if (isDirty) {
- return value.getSerializedSize();
- }
- return bytes.size();
- }
-
- public ByteString toByteString() {
- if (!isDirty) {
- return bytes;
- }
- synchronized (this) {
- if (!isDirty) {
- return bytes;
- }
- if (value == null) {
- bytes = ByteString.EMPTY;
- } else {
- bytes = value.toByteString();
- }
- isDirty = false;
- return bytes;
- }
- }
-
- protected void ensureInitialized(MessageLite defaultInstance) {
- if (value != null) {
- return;
- }
- synchronized (this) {
- if (value != null) {
- return;
- }
- try {
- if (bytes != null) {
- value = defaultInstance.getParserForType()
- .parseFrom(bytes, extensionRegistry);
- } else {
- value = defaultInstance;
- }
- } catch (IOException e) {
- // TODO(xiangl): Refactory the API to support the exception thrown from
- // lazily load messages.
- }
- }
- }
-}