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package javax.servlet.jsp.tagext;
/**
* Information on the attributes of a Tag, available at translation time.
* This class is instantiated from the Tag Library Descriptor file (TLD).
*
* <p>
* Only the information needed to generate code is included here. Other information
* like SCHEMA for validation belongs elsewhere.
*/
public class TagAttributeInfo {
/**
* "id" is wired in to be ID. There is no real benefit in having it be something else
* IDREFs are not handled any differently.
*/
public static final String ID = "id";
/**
* Constructor for TagAttributeInfo.
* This class is to be instantiated only from the
* TagLibrary code under request from some JSP code that is parsing a
* TLD (Tag Library Descriptor).
*
* @param name The name of the attribute.
* @param required If this attribute is required in tag instances.
* @param type The name of the type of the attribute.
* @param reqTime Whether this attribute holds a request-time Attribute.
*/
public TagAttributeInfo(String name, boolean required,
String type, boolean reqTime)
{
this.name = name;
this.required = required;
this.type = type;
this.reqTime = reqTime;
}
/**
* JSP 2.0 Constructor for TagAttributeInfo.
* This class is to be instantiated only from the
* TagLibrary code under request from some JSP code that is parsing a
* TLD (Tag Library Descriptor).
*
* @param name The name of the attribute.
* @param required If this attribute is required in tag instances.
* @param type The name of the type of the attribute.
* @param reqTime Whether this attribute holds a request-time Attribute.
* @param fragment Whether this attribute is of type JspFragment
*
* @since 2.0
*/
public TagAttributeInfo(String name, boolean required,
String type, boolean reqTime,
boolean fragment)
{
this( name, required, type, reqTime );
this.fragment = fragment;
}
/**
* The name of this attribute.
*
* @return the name of the attribute
*/
public String getName() {
return name;
}
/**
* The type (as a String) of this attribute.
*
* @return the type of the attribute
*/
public String getTypeName() {
return type;
}
/**
* Whether this attribute can hold a request-time value.
*
* @return if the attribute can hold a request-time value.
*/
public boolean canBeRequestTime() {
return reqTime;
}
/**
* Whether this attribute is required.
*
* @return if the attribute is required.
*/
public boolean isRequired() {
return required;
}
/**
* Convenience static method that goes through an array of TagAttributeInfo
* objects and looks for "id".
*
* @param a An array of TagAttributeInfo
* @return The TagAttributeInfo reference with name "id"
*/
public static TagAttributeInfo getIdAttribute(TagAttributeInfo a[]) {
for (int i=0; i<a.length; i++) {
if (a[i].getName().equals(ID)) {
return a[i];
}
}
return null; // no such attribute
}
/**
* Whether this attribute is of type JspFragment.
*
* @return if the attribute is of type JspFragment
*
* @since 2.0
*/
public boolean isFragment() {
return fragment;
}
/**
* Returns a String representation of this TagAttributeInfo, suitable
* for debugging purposes.
*
* @return a String representation of this TagAttributeInfo
*/
public String toString() {
StringBuffer b = new StringBuffer();
b.append("name = "+name+" ");
b.append("type = "+type+" ");
b.append("reqTime = "+reqTime+" ");
b.append("required = "+required+" ");
b.append("fragment = "+fragment+" ");
return b.toString();
}
/*
* private fields
*/
private String name;
private String type;
private boolean reqTime;
private boolean required;
/*
* private fields for JSP 2.0
*/
private boolean fragment;
}
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