Method apply

recipes/java-recipes/MicroSpatialTest.java:76–93

(Transaction tr)

	public static void setLocation(TransactionContext tcx, final String label, final long[] pos){
		tcx.run(new Function<Transaction,Void>() {
			public Void apply(Transaction tr){
				long z = xyToZ(pos);
				boolean isPrevious = false;
				long previous = 0l;

				for(KeyValue kv : tr.getRange(labelZ.subspace(Tuple.from(label)).range(),1)){
					isPrevious = true;
					previous = Tuple.fromBytes(kv.getKey()).getLong(2);
				}

				if(isPrevious){
					tr.clear(labelZ.pack(Tuple.from(label,previous)));
					tr.clear(zLabel.pack(Tuple.from(previous,label)));
				}
				tr.set(labelZ.pack(Tuple.from(label,z)),Tuple.from().pack());
				tr.set(zLabel.pack(Tuple.from(z,label)),Tuple.from().pack());
				return null;
			}
		});
	}