Run queries (#19)

2 files changed, 48 insertions, 1 deletions

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java
index 12682a6..4ac6f5c 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/ApiImplementation.java
@@ -1,10 +1,18 @@
 package pl.edu.mimuw.cloudatlas.agent;
 
+import java.io.PrintStream;
+
 import java.rmi.RemoteException;
 
-import java.util.Set;
+import java.util.List;
 import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
 
+import pl.edu.mimuw.cloudatlas.interpreter.Interpreter;
+import pl.edu.mimuw.cloudatlas.interpreter.InterpreterException;
+import pl.edu.mimuw.cloudatlas.interpreter.Main;
+import pl.edu.mimuw.cloudatlas.interpreter.QueryResult;
 import pl.edu.mimuw.cloudatlas.model.Attribute;
 import pl.edu.mimuw.cloudatlas.model.AttributesMap;
 import pl.edu.mimuw.cloudatlas.model.PathName;
@@ -13,6 +21,7 @@ import pl.edu.mimuw.cloudatlas.model.Value;
 import pl.edu.mimuw.cloudatlas.model.ValueQuery;
 import pl.edu.mimuw.cloudatlas.model.ValueSet;
 import pl.edu.mimuw.cloudatlas.model.ValueNull;
+import pl.edu.mimuw.cloudatlas.model.Type;
 import pl.edu.mimuw.cloudatlas.model.TypePrimitive;
 import pl.edu.mimuw.cloudatlas.model.ZMI;
 import pl.edu.mimuw.cloudatlas.api.Api;
@@ -53,6 +62,7 @@ public class ApiImplementation implements Api {
             ValueQuery query = new ValueQuery(queryCode);
             Attribute attributeName = new Attribute(name);
             installQueryInHierarchy(root, attributeName, query);
+            executeAllQueries(root);
         } catch (Exception e) {
             throw new RemoteException("Failed to install query", e);
         }
@@ -84,11 +94,41 @@ public class ApiImplementation implements Api {
         try {
             ZMI zmi = root.findDescendant(new PathName(zoneName));
             zmi.getAttributes().addOrChange(new Attribute(attributeName), value);
+            executeAllQueries(root);
         } catch (ZMI.NoSuchZoneException e) {
             throw new RemoteException("Zone not found", e);
         }
     }
 
+    private void executeAllQueries(ZMI zmi) {
+        if(!zmi.getSons().isEmpty()) {
+            for(ZMI son : zmi.getSons()) {
+                executeAllQueries(son);
+            }
+
+            Interpreter interpreter = new Interpreter(zmi);
+            for (ValueQuery query : getQueries(zmi)) {
+                try {
+                    List<QueryResult> result = interpreter.interpretProgram(query.getQuery());
+                    for(QueryResult r : result) {
+                        zmi.getAttributes().addOrChange(r.getName(), r.getValue());
+                    }
+                } catch(InterpreterException exception) {}
+            }
+        }
+    }
+
+    private Set<ValueQuery> getQueries(ZMI zmi) {
+        Set<ValueQuery> querySet = new HashSet<ValueQuery>();
+        for (Map.Entry<Attribute, Value> attribute : zmi.getAttributes()) {
+            if (attribute.getValue().getType().getPrimaryType() == Type.PrimaryType.QUERY) {
+                querySet.add((ValueQuery) attribute.getValue());
+            }
+        }
+
+        return querySet;
+    }
+
     public void setFallbackContacts(Set<ValueContact> contacts) throws RemoteException {
         this.contacts = contacts;
     }
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/NoopStream.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/NoopStream.java
new file mode 100644
index 0000000..cbd4b91
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/NoopStream.java
@@ -0,0 +1,7 @@
+package pl.edu.mimuw.cloudatlas.agent;
+
+import java.io.OutputStream;
+
+class NoopOutputStream extends OutputStream {
+    public void write(int b) {}
+}