gov.nist.javax.sdp.fields.SDPObject Maven / Gradle / Ivy
/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY. NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
/*******************************************************************************
* Product of NIST/ITL Advanced Networking Technologies Division (ANTD). *
*******************************************************************************/
package gov.nist.javax.sdp.fields;
import gov.nist.core.*;
import java.lang.reflect.*;
/**
* Root class for everything in this package.
*/
public abstract class SDPObject
extends GenericObject
implements SDPFieldNames {
protected static final String SDPFIELDS_PACKAGE =
PackageNames.SDP_PACKAGE + ".fields";
protected static final String CORE_PACKAGE = PackageNames.CORE_PACKAGE;
// should make this a property during the compile.
public abstract String encode();
protected void sprint(String s) {
super.sprint(s);
}
protected void initSprint() {
super.stringRepresentation = "";
}
public String toString() {
return encode();
}
protected String getStringRepresentation() {
return super.stringRepresentation;
}
/**
* An introspection based equality predicate for SDPObjects.
*@param that is the other object to test against.
*@return true if the objects are equal.
*/
public boolean equals(Object that) {
if (!this.getClass().equals(that.getClass()))
return false;
Class myclass = this.getClass();
Field[] fields = myclass.getDeclaredFields();
Class hisclass = that.getClass();
Field[] hisfields = hisclass.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
Field f = fields[i];
Field g = hisfields[i];
// Only print protected and public members.
int modifier = f.getModifiers();
if (modifier == Modifier.PRIVATE)
continue;
Class fieldType = f.getType();
String fieldName = f.getName();
if (fieldName.compareTo("stringRepresentation") == 0) {
continue;
}
if (fieldName.compareTo("indentation") == 0) {
continue;
}
try {
// Primitive fields are printed with type: value
if (fieldType.isPrimitive()) {
String fname = fieldType.toString();
if (fname.compareTo("int") == 0) {
if (f.getInt(this) != g.getInt(that))
return false;
} else if (fname.compareTo("short") == 0) {
if (f.getShort(this) != g.getShort(that))
return false;
} else if (fname.compareTo("char") == 0) {
if (f.getChar(this) != g.getChar(that))
return false;
} else if (fname.compareTo("long") == 0) {
if (f.getLong(this) != g.getLong(that))
return false;
} else if (fname.compareTo("boolean") == 0) {
if (f.getBoolean(this) != g.getBoolean(that))
return false;
} else if (fname.compareTo("double") == 0) {
if (f.getDouble(this) != g.getDouble(that))
return false;
} else if (fname.compareTo("float") == 0) {
if (f.getFloat(this) != g.getFloat(that))
return false;
}
} else if (g.get(that) == f.get(this))
continue;
else if (f.get(this) == null && g.get(that) != null)
return false;
else if (g.get(that) == null && f.get(that) != null)
return false;
else if (!f.get(this).equals(g.get(that)))
return false;
} catch (IllegalAccessException ex1) {
InternalErrorHandler.handleException(ex1);
}
}
return true;
}
/**
* Generic introspection based printing funciton for this package.
* Because we use introspection, this must reside in this package
* and we cannot use the superclass defintion (even though it
* is virtually identical.
*/
public String debugDump() {
stringRepresentation = "";
Class myclass = getClass();
sprint(myclass.getName());
sprint("{");
Field[] fields = myclass.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
Field f = fields[i];
// Only print protected and public members.
int modifier = f.getModifiers();
if (modifier == Modifier.PRIVATE)
continue;
Class fieldType = f.getType();
String fieldName = f.getName();
if (fieldName.compareTo("stringRepresentation") == 0) {
// avoid nasty recursions...
continue;
}
if (fieldName.compareTo("indentation") == 0) {
// formatting stuff - not relevant here.
continue;
}
sprint(fieldName + ":");
try {
// Primitive fields are printed with type: value
if (fieldType.isPrimitive()) {
String fname = fieldType.toString();
sprint(fname + ":");
if (fname.compareTo("int") == 0) {
int intfield = f.getInt(this);
sprint(intfield);
} else if (fname.compareTo("short") == 0) {
short shortField = f.getShort(this);
sprint(shortField);
} else if (fname.compareTo("char") == 0) {
char charField = f.getChar(this);
sprint(charField);
} else if (fname.compareTo("long") == 0) {
long longField = f.getLong(this);
sprint(longField);
} else if (fname.compareTo("boolean") == 0) {
boolean booleanField = f.getBoolean(this);
sprint(booleanField);
} else if (fname.compareTo("double") == 0) {
double doubleField = f.getDouble(this);
sprint(doubleField);
} else if (fname.compareTo("float") == 0) {
float floatField = f.getFloat(this);
sprint(floatField);
}
} else if (
Class.forName(
CORE_PACKAGE + ".GenericObject").isAssignableFrom(
fieldType)) {
if (f.get(this) != null) {
sprint(
((GenericObject) f.get(this)).debugDump(
indentation + 1));
} else {
sprint("");
}
} else if (
Class.forName(
CORE_PACKAGE + ".GenericObjectList").isAssignableFrom(
fieldType)) {
if (f.get(this) != null) {
sprint(
((GenericObjectList) f.get(this)).debugDump(
indentation + 1));
} else {
sprint("");
}
} else {
// Dont do recursion on things that are not
// of our header type...
if (f.get(this) != null) {
sprint(f.get(this).getClass().getName() + ":");
} else {
sprint(fieldType.getName() + ":");
}
sprint("{");
if (f.get(this) != null) {
sprint(f.get(this).toString());
} else {
sprint("");
}
sprint("}");
}
} catch (IllegalAccessException ex1) {
continue; // we are accessing a private field...
} catch (ClassNotFoundException ex) {
System.out.println("Cound not find " + ex.getMessage());
ex.printStackTrace();
System.exit(0);
}
}
sprint("}");
return stringRepresentation;
}
/** An introspection based predicate matching using a template
* object. Allows for partial match of two protocl Objects.
*@param other the match pattern to test against. The match object
* has to be of the same type (class). Primitive types
* and non-sip fields that are non null are matched for equality.
* Null in any field matches anything. Some book-keeping fields
* are ignored when making the comparison.
*/
public boolean match(Object other) {
if (other == null)
return true;
if (!this.getClass().equals(other.getClass()))
return false;
GenericObject that = (GenericObject) other;
Class myclass = this.getClass();
Field[] fields = myclass.getDeclaredFields();
Class hisclass = other.getClass();
Field[] hisfields = hisclass.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
Field f = fields[i];
Field g = hisfields[i];
// Only print protected and public members.
int modifier = f.getModifiers();
if (modifier == Modifier.PRIVATE)
continue;
Class fieldType = f.getType();
String fieldName = f.getName();
if (fieldName.compareTo("stringRepresentation") == 0) {
continue;
}
if (fieldName.compareTo("indentation") == 0) {
continue;
}
try {
// Primitive fields are printed with type: value
if (fieldType.isPrimitive()) {
String fname = fieldType.toString();
if (fname.compareTo("int") == 0) {
if (f.getInt(this) != g.getInt(that))
return false;
} else if (fname.compareTo("short") == 0) {
if (f.getShort(this) != g.getShort(that))
return false;
} else if (fname.compareTo("char") == 0) {
if (f.getChar(this) != g.getChar(that))
return false;
} else if (fname.compareTo("long") == 0) {
if (f.getLong(this) != g.getLong(that))
return false;
} else if (fname.compareTo("boolean") == 0) {
if (f.getBoolean(this) != g.getBoolean(that))
return false;
} else if (fname.compareTo("double") == 0) {
if (f.getDouble(this) != g.getDouble(that))
return false;
} else if (fname.compareTo("float") == 0) {
if (f.getFloat(this) != g.getFloat(that))
return false;
}
} else {
Object myObj = f.get(this);
Object hisObj = g.get(that);
if (hisObj == myObj)
return true;
else if (hisObj != null && myObj == null)
return false;
else if (
hisObj instanceof java.lang.String
&& myObj instanceof java.lang.String) {
if (((String) myObj)
.compareToIgnoreCase((String) hisObj)
!= 0)
return false;
} else if (
hisObj != null
&& GenericObject.isMySubclass(myObj.getClass())
&& GenericObject.isMySubclass(hisObj.getClass())
&& myObj.getClass().equals(hisObj.getClass())
&& ((GenericObject) hisObj).getMatcher() != null) {
String myObjEncoded = ((GenericObject) myObj).encode();
return ((GenericObject) hisObj).getMatcher().match(
myObjEncoded);
} else if (
GenericObject.isMySubclass(myObj.getClass())
&& !((GenericObject) myObj).match(hisObj))
return false;
else if (
GenericObjectList.isMySubclass(myObj.getClass())
&& !((GenericObjectList) myObj).match(hisObj))
return false;
}
} catch (IllegalAccessException ex1) {
InternalErrorHandler.handleException(ex1);
}
}
return true;
}
/**
* Formatter with a given starting indentation.
*/
public String dbgPrint(int indent) {
int save = indentation;
indentation = indent;
String retval = this.toString();
indentation = save;
return retval;
}
}