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Add Cursor.get(BufferProxy, BufferProxy, SeekOp) method #100

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Merged
bp-alex merged 2 commits into from
Apr 15, 2020
Merged

Add Cursor.get(BufferProxy, BufferProxy, SeekOp) method #100

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a3b61be
add cursor seek for MDB_GET_BOTH
svegaxmr Jul 24, 2018
7a70355
Merge branch 'master' of https://github.com/lmdbjava/lmdbjava into cu…
Sylvyrfysh Jan 17, 2019
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31 changes: 31 additions & 0 deletions src/main/java/org/lmdbjava/Cursor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -125,6 +125,37 @@ public boolean first() {
return seek(MDB_FIRST);
}

/**
* Reposition the key/value buffers based on the passed key and operation.
*
* @param key to search for
* @param data to search for
* @param op options for this operation
* @return false if key not found
*/
public boolean get(final T key, final T data, final SeekOp op) {
if (SHOULD_CHECK) {
requireNonNull(key);
requireNonNull(op);
checkNotClosed();
txn.checkReady();
}
kv.keyIn(key);
kv.valIn(data);

final int rc = LIB.mdb_cursor_get(ptrCursor, kv.pointerKey(), kv
.pointerVal(), op.getCode());

if (rc == MDB_NOTFOUND) {
return false;
}

checkRc(rc);
kv.keyOut();
kv.valOut();
return true;
}

/**
* Reposition the key/value buffers based on the passed key and operation.
*
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