com.pervasive.datarush.graphs

Interface PropertyValued

All Known Subinterfaces:

LogicalGraph, LogicalSubgraph

All Known Implementing Classes:

OpenComposite, OpenModelSink, OpenModelSource, OpenMultiModelSink, OpenMultiModelSource, OpenMultiRecordSink, OpenMultiRecordSource, OpenRecordSink, OpenRecordSource

public interface PropertyValued

Shared interface implemented by LogicalGraph and OpenComposite. Both graphs and OpenComposites support getting and setting of properties of the operators that are contained within. This is normally used in-conjunction with JSON parsing, where there is a graph defined via JSON and you needs to override properties defined in the JSON. For example:

     //create a json parser
     JSON jsonParser= new JSON();
     
     //parse json from a file into a LogicalGraph.
     //For this example, assume the json contains a ReadDelimitedText
     //operator named "reader"
     String json= FileUtil.readFileString(new File(file), charset);
     LogicalGraph graph= jsonParser.parse(json, LogicalGraph.class);
     
     //override the reader's source to use a different file
     graph.setProperty("reader.source","c:/myinput.txt");
     
     //run the graph
     graph.run();
 

Clients should generally not need to implement this interface.

Method Summary

Modifier and Type	Method and Description
Object	getProperty(GraphPath path) Returns a property of the given path.
Object	getProperty(String path) Returns a property of the given path.
void	setProperty(GraphPath path, Object value) Sets a property of the given path.
void	setProperty(String path, Object value) Sets a property of the given path.

Method Detail

getProperty

Object getProperty(GraphPath path)

Returns a property of the given path. Paths are of the form operatorPath.propertyName", where operatorPath is the name of an operator that was added to this graph and propertyName is the name of a property of the object.

Parameters:

path - the path to the property.

Returns:

the value of the property

getProperty

Object getProperty(String path)

Returns a property of the given path. Paths are of the form operatorPath.propertyName", where operatorPath is the name of an operator that was added to this graph and propertyName is the name of a property of the object.

Parameters:

path - the path to the property.

Returns:

the value of the property

setProperty

void setProperty(GraphPath path,
                 Object value)

Sets a property of the given path. Paths are of the form operatorPath.propertyName", where operatorPath is the name of an operator that was added to this graph and propertyName is the name of a property of the object.

Parameters:

path - the path to the property.

value - the new value of the property

setProperty

void setProperty(String path,
                 Object value)

Sets a property of the given path. Paths are of the form operatorPath.propertyName", where operatorPath is the name of an operator that was added to this graph and propertyName is the name of a property of the object.

Parameters:

path - the path to the property.

value - the new value of the property