/*
* Portions Copyright 2000-2007 Sun Microsystems, Inc. All Rights
* Reserved. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*/
/*
*/
package gov.nist.siplite.header;
import gov.nist.core.*;
import java.util.*;
import gov.nist.siplite.address.*;
/**
* Parameters header. Suitable for extension by headers that have parameters.
*
*
* <a href="{@docRoot}/uncopyright.html">This code is in the public domain.</a>
*
* @version JAIN-SIP-1.1
*
*/
public abstract class ParametersHeader extends Header {
/** Contents of the parameter list. */
protected NameValueList parameters;
/** Default constructor. */
protected ParametersHeader() {
this.parameters = new NameValueList();
}
/**
* Constructor with initial header name.
* @param hdrName an initial header name
*/
protected ParametersHeader(String hdrName) {
super(hdrName);
this.parameters = new NameValueList();
}
/**
* Returns the value of the named parameter, or null if it is not set. A
* zero-length String indicates flag parameter.
*
* @param name name of parameter to retrieve
* @return the value of specified parameter
*/
public String getParameter(String name) {
return this.parameters.getParameter(name);
}
/**
* Returns the parameter as an object (dont convert to string).
*
* @param name is the name of the parameter to get.
* @return the object associated with the name.
*
*/
public Object getParameterValue(String name) {
return this.parameters.getValue(name);
}
/**
* Returns an Vector over the names (Strings) of all parameters present
* in this ParametersHeader.
*
* @return an Iterator over all the parameter names
*/
public Vector getParameterNames() {
return parameters.getNames();
}
/**
* Returns true if you have a parameter and false otherwise.
*
* @return true if the parameters list is non-empty.
*/
public boolean hasParameters() {
return parameters != null && ! parameters.isEmpty();
}
/**
* Removes the specified parameter from Parameters of this ParametersHeader.
* This method returns silently if the parameter is not part of the
* ParametersHeader.
*
* @param name - a String specifying the parameter name
*/
public void removeParameter(String name) {
this.parameters.delete(name);
}
/**
* Sets the value of the specified parameter. If the parameter already had
*
* a value it will be overwritten. A zero-length String indicates flag
*
* parameter.
*
*
*
* @param name - a String specifying the parameter name
*
* @param value - a String specifying the parameter value
*
* @throws ParseException which signals that an error has been reached
*
* unexpectedly while parsing the parameter name or value.
*
*/
public void setParameter(String name, String value) {
NameValue nv = parameters.getNameValue(name);
if (nv != null) {
nv.setValue(value);
} else {
nv = new NameValue(name, value);
}
this.parameters.set(nv);
}
/**
* Sets the value of the specified parameter. If the parameter already had
*
* a value it will be overwritten. A zero-length String indicates flag
*
* parameter.
*
*
*
* @param name - a String specifying the parameter name
*
* @param value - a String specifying the parameter value
*
* @throws ParseException which signals that an error has been reached
*
* unexpectedly while parsing the parameter name or value.
*
*/
public void setQuotedParameter(String name, String value)
throws ParseException {
NameValue nv = parameters.getNameValue(name);
if (nv != null) {
nv.setValue(value);
nv.setQuotedValue();
} else {
nv = new NameValue(name, value);
nv.setQuotedValue();
this.parameters.set(nv);
}
}
/**
* Sets the value of the specified parameter. If the parameter already had
*
* a value it will be overwritten.
*
*
* @param name - a String specifying the parameter name
*
* @param value - an int specifying the parameter value
*
* @throws ParseException which signals that an error has been reached
*
* unexpectedly while parsing the parameter name or value.
*
*/
protected void setParameter(String name, int value) {
Integer val = new Integer(value);
NameValue nv = parameters.getNameValue(name);
if (nv != null) {
nv.setValue(val);
} else {
nv = new NameValue(name, val);
this.parameters.set(nv);
}
}
/**
* Sets the value of the specified parameter. If the parameter already had
*
* a value it will be overwritten.
*
*
* @param name - a String specifying the parameter name
*
* @param value - a boolean specifying the parameter value
*
* @throws ParseException which signals that an error has been reached
*
* unexpectedly while parsing the parameter name or value.
*
*/
protected void setParameter(String name, boolean value) {
Boolean val = new Boolean(value);
NameValue nv = parameters.getNameValue(name);
if (nv != null) {
nv.setValue(val);
} else {
nv = new NameValue(name, val);
this.parameters.set(nv);
}
}
/**
* Sets the value of the specified parameter. If the parameter already had
*
* a value it will be overwritten. A zero-length String indicates flag
*
* parameter.
*
*
*
* @param name - a String specifying the parameter name
*
* @param value - a String specifying the parameter value
*
* @throws ParseException which signals that an error has been reached
*
* unexpectedly while parsing the parameter name or value.
*
*/
protected void setParameter(String name, Object value) {
NameValue nv = parameters.getNameValue(name);
if (nv != null) {
nv.setValue(value);
} else {
nv = new NameValue(name, value);
this.parameters.set(nv);
}
}
/**
* Returns true if has a parameter.
*
* @param parameterName is the name of the parameter.
*
* @return true if the parameter exists and false if not.
*/
public boolean hasParameter(String parameterName) {
return this.parameters.hasNameValue(parameterName);
}
/**
* Removes all parameters.
*/
public void removeParameters() {
this.parameters = new NameValueList();
}
/**
* get the parameter list.
* @return parameter list
*/
public NameValueList getParameters() {
return parameters;
}
/**
* Sets the parameter given a name and value.
*
* @param nameValue - the name value of the parameter to set.
*/
public void setParameter(NameValue nameValue) {
this.parameters.set(nameValue);
}
/**
* Sets the parameter list.
*
* @param parameters the name value list to set as the parameter list.
*/
public void setParameters(NameValueList parameters) {
this.parameters = parameters;
}
/**
* Gets the parameter as an integer value.
*
* @param parameterName -- the parameter name to fetch.
*
* @return -1 if the parameter is not defined in the header.
*/
protected int getParameterAsInt(String parameterName) {
if (this.getParameterValue(parameterName) != null) {
try {
if (this.getParameterValue(parameterName)
instanceof String) {
return Integer.parseInt
(this.getParameter(parameterName));
} else {
return
((Integer)getParameterValue(parameterName)).intValue();
}
} catch (NumberFormatException ex) {
return -1;
}
} else return -1;
}
/**
* Gets the parameter as an integer when it is entered as a hex.
*
* @param parameterName -- The parameter name to fetch.
*
* @return -1 if the parameter is not defined in the header.
*/
protected int getParameterAsHexInt(String parameterName) {
if (this.getParameterValue(parameterName) != null) {
try {
if (this.getParameterValue(parameterName)
instanceof String) {
return Integer.parseInt
(this.getParameter(parameterName), 16);
} else {
return
((Integer)getParameterValue(parameterName)).intValue();
}
} catch (NumberFormatException ex) {
return -1;
}
} else return -1;
}
/**
* Gets the parameter as a long value.
*
* @param parameterName -- the parameter name to fetch.
*
* @return -1 if the parameter is not defined or the parameter as a long.
*/
protected long getParameterAsLong(String parameterName) {
if (this.getParameterValue(parameterName) != null) {
try {
if (this.getParameterValue(parameterName)
instanceof String) {
return Long.parseLong
(this.getParameter(parameterName));
} else {
return
((Long)getParameterValue(parameterName)).longValue();
}
} catch (NumberFormatException ex) {
return -1;
}
} else return -1;
}
/**
* Gets the parameter value as a URI.
*
* @param parameterName -- the parameter name
*
* @return value of the parameter as a URI or null if the parameter
* not present.
*/
protected URI getParameterAsURI(String parameterName) {
Object val = getParameterValue(parameterName);
if (val instanceof URI)
return (URI) val;
else {
try {
return new URI((String)val);
} catch (ParseException ex) {
// catch (URISyntaxException ex) {
return null;
}
}
}
/**
* Gets the parameter value as a boolean.
*
* @param parameterName the parameter name
* @return boolean value of the parameter.
*/
protected boolean getParameterAsBoolean(String parameterName) {
Object val = getParameterValue(parameterName);
if (val == null) {
return false;
} else if (val instanceof Boolean) {
return ((Boolean) val).booleanValue();
} else if (val instanceof String) {
return equalsIgnoreCase((String)val, "true");
} else return false;
}
/**
* This is for the benifit of the TCK.
*
* @param parameterName the parameter name
* @return the name value pair for the given parameter name.
*/
public NameValue getNameValue(String parameterName) {
return parameters.getNameValue(parameterName);
}
/**
* Encodes the contents as a string.
* @return encoded string of object contents.
*/
protected abstract String encodeBody();
/**
* Encodes the parameters as a string.
* @return encoded string of object contents.
*/
protected String encodeWithSep() {
if (parameters == null) {
return "";
} else {
return parameters.encodeWithSep();
}
}
}
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