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reftable: add maxUpdateIndex to Reftable 

This makes maxUpdateIndex() available in MergedReftable, so we can
know generically at which index to create the next reftable in a
stack.

Change-Id: Ia2314bc57c8b5dd7e69d5e61096fdce1d35abd11
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
This commit is contained in:
Han-Wen Nienhuys 2019-09-08 18:02:05 +02:00
parent a793be2111
commit 33dc08c162
3 changed files with 24 additions and 8 deletions
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9
org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/MergedReftable.java
View File

@ -91,6 +91,15 @@ public MergedReftable(List<Reftable> tableStack) {
}
}
/**
* {@inheritDoc}
*/
@Override
public long maxUpdateIndex() throws IOException {
return tables.length > 0 ? tables[tables.length - 1].maxUpdateIndex()
: 0;
}
/** {@inheritDoc} */
@Override
public RefCursor allRefs() throws IOException {

13
org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/Reftable.java
View File

@ -98,6 +98,19 @@ public void setIncludeDeletes(boolean deletes) {
includeDeletes = deletes;
}
/**
* Get the maximum update index for log entries that appear in this
* reftable.
*
* @return the maximum update index for log entries that appear in this
* reftable. This should be 1 higher than the prior reftable's
* {@code maxUpdateIndex} if this table is used in a stack.
* @throws java.io.IOException
* file cannot be read.
*/
public abstract long maxUpdateIndex() throws IOException;
/**
* Seek to the first reference, to iterate in order.
*

10
org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableReader.java
View File

@ -146,15 +146,9 @@ public long minUpdateIndex() throws IOException {
}
/**
* Get the maximum update index for log entries that appear in this
* reftable.
*
* @return the maximum update index for log entries that appear in this
* reftable. This should be 1 higher than the prior reftable's
* {@code maxUpdateIndex} if this table is used in a stack.
* @throws java.io.IOException
* file cannot be read.
* {@inheritDoc}
*/
@Override
public long maxUpdateIndex() throws IOException {
if (blockSize == -1) {
readFileHeader();