package at.yawk.numaec;
import org.eclipse.collections.api.ByteIterable;
import org.eclipse.collections.api.bag.MutableBag;
import org.eclipse.collections.api.bag.primitive.MutableByteBag;
import org.eclipse.collections.api.block.function.primitive.ByteFunction;
import org.eclipse.collections.api.block.function.primitive.ByteFunction0;
import org.eclipse.collections.api.block.function.primitive.ByteToByteFunction;
import org.eclipse.collections.api.block.function.primitive.ByteToObjectFunction;
import org.eclipse.collections.api.block.function.primitive.ByteByteToByteFunction;
import org.eclipse.collections.api.block.function.primitive.ByteToByteFunction;
import org.eclipse.collections.api.block.predicate.primitive.BytePredicate;
import org.eclipse.collections.api.block.predicate.primitive.ByteBytePredicate;
import org.eclipse.collections.api.iterator.MutableByteIterator;
import org.eclipse.collections.api.map.primitive.MutableByteByteMap;
import org.eclipse.collections.api.map.primitive.MutableByteByteMap;
import org.eclipse.collections.api.map.primitive.ByteByteMap;
public class ByteByteBTreeMap extends BaseByteByteMap implements ByteByteBufferMap {
protected final BTree bTree;
protected int size = 0;
ByteByteBTreeMap(LargeByteBufferAllocator allocator, BTreeConfig config) {
int leafSize = Byte.BYTES + Byte.BYTES;
int branchSize = config.entryMustBeInLeaf ? Byte.BYTES : leafSize;
this.bTree = new BTree(allocator, config, branchSize, leafSize) {
@Override
protected void writeBranchEntry(LargeByteBuffer lbb, long address, long key, long value) {
lbb.setByte(address, fromKey(key));
if (!config.entryMustBeInLeaf) {
lbb.setByte(address + Byte.BYTES, fromValue(value));
}
}
@Override
protected void writeLeafEntry(LargeByteBuffer lbb, long address, long key, long value) {
lbb.setByte(address, fromKey(key));
lbb.setByte(address + Byte.BYTES, fromValue(value));
}
@Override
protected long readBranchKey(LargeByteBuffer lbb, long address) {
return toKey(lbb.getByte(address));
}
@Override
protected long readBranchValue(LargeByteBuffer lbb, long address) {
if (config.entryMustBeInLeaf) {
throw new AssertionError();
} else {
return toValue(lbb.getByte(address + Byte.BYTES));
}
}
@Override
protected long readLeafKey(LargeByteBuffer lbb, long address) {
return toKey(lbb.getByte(address));
}
@Override
protected long readLeafValue(LargeByteBuffer lbb, long address) {
return toValue(lbb.getByte(address + Byte.BYTES));
}
};
}
@Override
protected MapStoreCursor iterationCursor() {
BTree.Cursor cursor = bTree.allocateCursor();
cursor.descendToStart();
return cursor;
}
@Override
protected MapStoreCursor keyCursor(byte key) {
BTree.Cursor cursor = bTree.allocateCursor();
cursor.descendToKey(toKey(key));
return cursor;
}
@DoNotMutate
@Override
void checkInvariants() {
super.checkInvariants();
bTree.checkInvariants();
}
@Override
public int size() {
return size;
}
@Override
public void close() {
bTree.close();
}
public static class Mutable extends ByteByteBTreeMap implements MutableByteByteBufferMap {
Mutable(LargeByteBufferAllocator allocator, BTreeConfig config) {
super(allocator, config);
}
@Override
public void put(byte key, byte value) {
long k = toKey(key);
long v = toValue(value);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
cursor.setValue(v);
} else {
cursor.simpleInsert(k, v);
cursor.balance();
size++;
}
}
}
@Override
public void putAll(ByteByteMap map) {
map.forEachKeyValue(this::put);
}
@Override
public void updateValues(ByteByteToByteFunction function) {
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToStart();
while (cursor.next()) {
byte updated = function.valueOf(fromKey(cursor.getKey()), fromValue(cursor.getValue()));
cursor.setValue(toValue(updated));
}
}
}
@Override
public void removeKey(byte key) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
cursor.simpleRemove();
cursor.balance();
size--;
}
}
}
@Override
public void remove(byte key) {
removeKey(key);
}
@Override
public byte removeKeyIfAbsent(byte key, byte value) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
byte v = fromValue(cursor.getValue());
cursor.simpleRemove();
cursor.balance();
size--;
return v;
} else {
return value;
}
}
}
@Override
public byte getIfAbsentPut(byte key, byte value) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
return fromValue(cursor.getValue());
} else {
cursor.simpleInsert(k, toValue(value));
cursor.balance();
size++;
return value;
}
}
}
@Override
public byte getIfAbsentPut(byte key, ByteFunction0 function) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
return fromValue(cursor.getValue());
} else {
byte v = function.value();
cursor.simpleInsert(k, toValue(v));
cursor.balance();
size++;
return v;
}
}
}
@Override
public byte getIfAbsentPutWithKey(byte key, ByteToByteFunction function) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
return fromValue(cursor.getValue());
} else {
byte v = function.valueOf(key);
cursor.simpleInsert(k, toValue(v));
cursor.balance();
size++;
return v;
}
}
}
@Override
public <P> byte getIfAbsentPutWith(byte key, ByteFunction<? super P> function, P parameter) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
return fromValue(cursor.getValue());
} else {
byte v = function.byteValueOf(parameter);
cursor.simpleInsert(k, toValue(v));
cursor.balance();
size++;
return v;
}
}
}
@Override
public byte updateValue(byte key, byte initialValueIfAbsent, ByteToByteFunction function) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
byte updated = function.valueOf(fromValue(cursor.getValue()));
cursor.setValue(toValue(updated));
return updated;
} else {
byte updated = function.valueOf(initialValueIfAbsent);
cursor.simpleInsert(k, toValue(updated));
cursor.balance();
size++;
return updated;
}
}
}
@Override
public MutableByteByteMap withKeyValue(byte key, byte value) {
put(key, value);
return this;
}
@Override
public MutableByteByteMap withoutKey(byte key) {
removeKey(key);
return this;
}
@Override
public MutableByteByteMap withoutAllKeys(ByteIterable keys) {
keys.forEach(this::removeKey);
return this;
}
@Override
public MutableByteByteMap asUnmodifiable() {
throw new UnsupportedOperationException("Mutable.asUnmodifiable not implemented yet");
}
@Override
public MutableByteByteMap asSynchronized() {
throw new UnsupportedOperationException("Mutable.asSynchronized not implemented yet");
}
@Override
public byte addToValue(byte key, byte toBeAdded) {
long k = toKey(key);
try (BTree.Cursor cursor = bTree.allocateCursor()) {
cursor.descendToKey(k);
if (cursor.elementFound()) {
byte updated = (byte) (fromValue(cursor.getValue()) + toBeAdded);
cursor.setValue(toValue(updated));
return updated;
} else {
cursor.simpleInsert(k, toValue(toBeAdded));
cursor.balance();
size++;
return toBeAdded;
}
}
}
@Override
public void clear() {
bTree.clear();
size = 0;
}
@Override
public MutableByteByteMap flipUniqueValues() {
throw new UnsupportedOperationException("ByteByteBufferMap.Mutable.flipUniqueValues not implemented yet");
}
@Override
public MutableByteByteMap select(ByteBytePredicate predicate) {
throw new UnsupportedOperationException("ByteByteBufferMap.Mutable.select not implemented yet");
}
@Override
public MutableByteBag select(BytePredicate predicate) {
throw new UnsupportedOperationException("ByteByteBufferMap.Mutable.select not implemented yet");
}
@Override
public MutableByteByteMap reject(ByteBytePredicate predicate) {
throw new UnsupportedOperationException("ByteByteBufferMap.Mutable.reject not implemented yet");
}
@Override
public MutableByteBag reject(BytePredicate predicate) {
throw new UnsupportedOperationException("ByteByteBufferMap.Mutable.reject not implemented yet");
}
@Override
public <V> MutableBag<V> collect(ByteToObjectFunction<? extends V> function) {
throw new UnsupportedOperationException("ByteByteBufferMap.Mutable.collect not implemented yet");
}
@Override
public MutableByteIterator byteIterator() {
return super.byteIterator();
}
}
}