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/**
* Title: File
* Description: A file I/O class for the Event Analysis Configurator
*/
package EAC;
import java.io.RandomAccessFile;
public class File extends RandomAccessFile {
public final int SOURCE = 1;
public final int SINK = 2;
public final int COMPONENT = 3;
public final int CONNECTOR = 4;
public final int UNION = 5;
public final int INTERSECTION = 6;
public final int LABEL = 7;
protected Configuration config;
protected EACPanel canvas;
public File(String filename, String mode, Configuration c, EACPanel p)
throws java.io.FileNotFoundException {
super(filename,mode);
config = c;
canvas = p;
} /* constructor */
public void writeConfiguration() throws java.io.IOException {
int i;
// write number of primitives
writeInt(config.getPrimitiveCount());
// write primitives
for (i = 0; i < config.getPrimitiveCount(); i++)
config.getPrimitive(i).write(this);
} /* writeConfiguration */
public void readConfiguration() throws java.io.IOException, TooManyPrimitivesException {
int i,
num,
label_length, // for reading the number of chars in an EACLabel
primitiveID;
Primitive next_primitive = new Union(canvas); // dummy initialization
Connector next_connector;
// read number of primitives
num = readInt();
for (i = 0; i < num; i++) {
primitiveID = readInt();
switch(primitiveID) {
case SOURCE:
next_primitive = new Source(canvas,config);
next_primitive.read(this);
i++; // Add one more to the loop counter 'cause we read our own label
break;
case SINK:
next_primitive = new Sink(canvas);
next_primitive.read(this);
break;
case COMPONENT:
next_primitive = new EACComponent(canvas,config);
next_primitive.read(this);
i++; // Add one more to the loop counter 'cause we read our own label
break;
case CONNECTOR:
next_connector = new Connector(canvas);
next_primitive = next_connector; // so it can be added to the config
next_connector.read(this);
try {
int connector_start_index = config.leftSideOverlaps(next_connector);
int connector_end_index = config.rightSideOverlaps(next_connector);
Primitive startP = config.getPrimitive(connector_start_index);
Primitive endP = config.getPrimitive(connector_end_index);
// reinstate connection
startP.addOutput(next_connector);
next_connector.setInput(startP);
next_connector.setOutput(endP);
endP.addInput(next_connector);
} catch (ConnectionException ce) {
// can't happen (right?)
} /* try */
break;
case UNION:
next_primitive = new Union(canvas);
next_primitive.read(this);
break;
case INTERSECTION:
next_primitive = new Intersection(canvas);
next_primitive.read(this);
break;
case LABEL:
label_length = readInt();
next_primitive = new EACLabel(canvas,label_length);
next_primitive.read(this);
break;
} /* switch */
// add to configuration
config.addPrimitive(next_primitive);
} /* for */
// draw the configuration
config.draw();
} /* readConfiguration */
}
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