diff options
Diffstat (limited to 'java/src/main/java/com/google/protobuf/nano/MessageNano.java')
| -rw-r--r-- | java/src/main/java/com/google/protobuf/nano/MessageNano.java | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/java/src/main/java/com/google/protobuf/nano/MessageNano.java b/java/src/main/java/com/google/protobuf/nano/MessageNano.java index 8d4ec39..7eff153 100644 --- a/java/src/main/java/com/google/protobuf/nano/MessageNano.java +++ b/java/src/main/java/com/google/protobuf/nano/MessageNano.java @@ -38,6 +38,8 @@ import java.io.IOException; * @author wink@google.com Wink Saville */ public abstract class MessageNano { + protected int cachedSize = -1; + /** * Get the number of bytes required to encode this message. * Returns the cached size or calls getSerializedSize which @@ -45,14 +47,24 @@ public abstract class MessageNano { * so the size is only computed once. If a member is modified * then this could be stale call getSerializedSize if in doubt. */ - abstract public int getCachedSize(); + public int getCachedSize() { + if (cachedSize < 0) { + // getSerializedSize sets cachedSize + getSerializedSize(); + } + return cachedSize; + } /** * Computes the number of bytes required to encode this message. * The size is cached and the cached result can be retrieved * using getCachedSize(). */ - abstract public int getSerializedSize(); + public int getSerializedSize() { + // This is overridden if the generated message has serialized fields. + cachedSize = 0; + return 0; + } /** * Serializes the message and writes it to {@code output}. This does not |