1 files changed, 42 insertions, 0 deletions
diff --git a/Monitoring/MonitoringService/DataProcessing/LinearCombination.py b/Monitoring/MonitoringService/DataProcessing/LinearCombination.py
new file mode 100644
index 0000000..5174b58
--- /dev/null
+++ b/Monitoring/MonitoringService/DataProcessing/LinearCombination.py
@@ -0,0 +1,42 @@
+'''
+Created on Mar 21, 2013
+
+@author: steger
+'''
+from DataProcessing.DataSource import DataSource
+from DataProcessing.Aggregator import Aggregator
+from DataProcessing.DataError import DataError
+
+class LinearCombination(DataSource):
+    '''
+    classdocs
+    '''
+
+    def __init__(self):
+        '''
+        Constructor
+        '''
+        DataSource.__init__(self, dependency = None)
+        self._terms = []
+        self._value = None
+        
+    def addTerm(self, factor, aggregate):
+        if not isinstance(aggregate, Aggregator):
+            raise DataError("Wrong type of term")
+        self._terms.append((factor, aggregate))
+    
+    @property
+    def name(self):
+        return "BLA"
+    
+    @property
+    def value(self):
+        self.process()
+        return self._value
+    
+    def process(self):
+        result = 0
+        for factor, aggregate in self._terms:
+            term = aggregate.aggregate
+            result += factor * term
+        self._value = result
+\ No newline at end of file