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Added some information (and comments) in HAM CRDT class

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ChronosX88 2019-05-07 21:04:43 +04:00
parent b563c94cca
commit 2ab66392b2
1 changed files with 11 additions and 11 deletions
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22
src/main/java/io/github/chronosx88/JGUN/HAM.java
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@ -7,35 +7,36 @@ import org.json.JSONObject;
import java.util.Map;
public class HAM {
private static long defer = Long.MAX_VALUE;
static class HAMResult {
public boolean defer = false;
public boolean historical = false;
public boolean converge = false;
public boolean incoming = false;
public boolean current = false;
public boolean defer = false; // Defer means that the current state is greater than our computer time, and should only be processed when our computer time reaches this state
public boolean historical = false; // Historical means the old state. This is usually ignored.
public boolean converge = false; // Everything is fine, you can do merge
public boolean incoming = false; // Leave incoming value
public boolean current = false; // Leave current value
public boolean state = false;
public String err = null;
}
public static HAMResult ham(long machineState, long incomingState, long currentState, Object incomingValue, Object currentValue) {
HAMResult result = new HAMResult();
if(machineState < incomingState) {
// the incoming value is outside the boundary of the machine's state, it must be reprocessed in another state.
result.defer = true;
return result;
}
if(incomingState < currentState){
if(incomingState < currentState) {
// the incoming value is within the boundary of the machine's state, but not within the range.
result.historical = true;
return result;
}
if(currentState < incomingState) {
// the incoming value is within both the boundary and the range of the machine's state.
result.converge = true;
result.incoming = true;
return result;
}
if(incomingState == currentState) {
// if incoming state and current state is the same
if(incomingValue.equals(currentValue)) {
result.state = true;
return result;
@ -51,8 +52,7 @@ public class HAM {
return result;
}
}
result.err = "Invalid CRDT Data: "+ incomingValue +" to "+ currentValue +" at "+ incomingState +" to "+ currentState +"!";
return result;
throw new IllegalArgumentException("Invalid CRDT Data: "+ incomingValue +" to "+ currentValue +" at "+ incomingState +" to "+ currentState +"!");
}
public static InMemoryGraph mix(InMemoryGraph change, StorageBackend data) {