Java TagInfo.hasDynamicAttributes方法代码示例

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
private void checkNamedAttributes(Node.CustomTag n,
        Node.JspAttribute[] jspAttrs, int start,
        Hashtable<String, Object> tagDataAttrs)
        throws JasperException {

    TagInfo tagInfo = n.getTagInfo();
    if (tagInfo == null) {
        err.jspError(n, "jsp.error.missing.tagInfo", n.getQName());
    }
    TagAttributeInfo[] tldAttrs = tagInfo.getAttributes();
    Node.Nodes naNodes = n.getNamedAttributeNodes();

    for (int i = 0; i < naNodes.size(); i++) {
        Node.NamedAttribute na = (Node.NamedAttribute) naNodes
                .getNode(i);
        boolean found = false;
        for (int j = 0; j < tldAttrs.length; j++) {
            /*
             * See above comment about namespace matches. For named
             * attributes, we use the prefix instead of URI as the match
             * criterion, because in the case of a JSP document, we'd
             * have to keep track of which namespaces are in scope when
             * parsing a named attribute, in order to determine the URI
             * that the prefix of the named attribute's name matches to.
             */
            String attrPrefix = na.getPrefix();
            if (na.getLocalName().equals(tldAttrs[j].getName())
                    && (attrPrefix == null || attrPrefix.length() == 0 || attrPrefix
                            .equals(n.getPrefix()))) {
                jspAttrs[start + i] = new Node.JspAttribute(na,
                        tldAttrs[j], false);
                NamedAttributeVisitor nav = null;
                if (na.getBody() != null) {
                    nav = new NamedAttributeVisitor();
                    na.getBody().visit(nav);
                }
                if (nav != null && nav.hasDynamicContent()) {
                    tagDataAttrs.put(na.getName(),
                            TagData.REQUEST_TIME_VALUE);
                } else {
                    tagDataAttrs.put(na.getName(), na.getText());
                }
                found = true;
                break;
            }
        }
        if (!found) {
            if (tagInfo.hasDynamicAttributes()) {
                jspAttrs[start + i] = new Node.JspAttribute(na, null,
                        true);
            } else {
                err.jspError(n, "jsp.error.bad_attribute",
                        na.getName(), n.getLocalName());
            }
        }
    }
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
/**
 * Determine the body type of <jsp:attribute> from the enclosing node
 */
private String getAttributeBodyType(Node n, String name) {

    if (n instanceof Node.CustomTag) {
        TagInfo tagInfo = ((Node.CustomTag) n).getTagInfo();
        TagAttributeInfo[] tldAttrs = tagInfo.getAttributes();
        for (int i = 0; i < tldAttrs.length; i++) {
            if (name.equals(tldAttrs[i].getName())) {
                if (tldAttrs[i].isFragment()) {
                    return TagInfo.BODY_CONTENT_SCRIPTLESS;
                }
                if (tldAttrs[i].canBeRequestTime()) {
                    return TagInfo.BODY_CONTENT_JSP;
                }
            }
        }
        if (tagInfo.hasDynamicAttributes()) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.IncludeAction) {
        if ("page".equals(name)) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.ForwardAction) {
        if ("page".equals(name)) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.SetProperty) {
        if ("value".equals(name)) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.UseBean) {
        if ("beanName".equals(name)) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.PlugIn) {
        if ("width".equals(name) || "height".equals(name)) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.ParamAction) {
        if ("value".equals(name)) {
            return TagInfo.BODY_CONTENT_JSP;
        }
    } else if (n instanceof Node.JspElement) {
        return TagInfo.BODY_CONTENT_JSP;
    }

    return JAVAX_BODY_CONTENT_TEMPLATE_TEXT;
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
/**
 * Generates declarations for tag handler attributes, and defines the getter
 * and setter methods for each.
 */
private void generateTagHandlerAttributes(TagInfo tagInfo) {

    if (tagInfo.hasDynamicAttributes()) {
        out.printil("private java.util.HashMap _jspx_dynamic_attrs = new java.util.HashMap();");
    }

    // Declare attributes
    TagAttributeInfo[] attrInfos = tagInfo.getAttributes();
    for (int i = 0; i < attrInfos.length; i++) {
        out.printin("private ");
        if (attrInfos[i].isFragment()) {
            out.print("javax.servlet.jsp.tagext.JspFragment ");
        } else {
            out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
            out.print(" ");
        }
        out.print(JspUtil.makeJavaIdentifierForAttribute(
                attrInfos[i].getName()));
        out.println(";");
    }
    out.println();

    // Define attribute getter and setter methods
    for (int i = 0; i < attrInfos.length; i++) {
        String javaName =
            JspUtil.makeJavaIdentifierForAttribute(attrInfos[i].getName());

        // getter method
        out.printin("public ");
        if (attrInfos[i].isFragment()) {
            out.print("javax.servlet.jsp.tagext.JspFragment ");
        } else {
            out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
            out.print(" ");
        }
        out.print(toGetterMethod(attrInfos[i].getName()));
        out.println(" {");
        out.pushIndent();
        out.printin("return this.");
        out.print(javaName);
        out.println(";");
        out.popIndent();
        out.printil("}");
        out.println();

        // setter method
        out.printin("public void ");
        out.print(toSetterMethodName(attrInfos[i].getName()));
        if (attrInfos[i].isFragment()) {
            out.print("(javax.servlet.jsp.tagext.JspFragment ");
        } else {
            out.print("(");
            out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
            out.print(" ");
        }
        out.print(javaName);
        out.println(") {");
        out.pushIndent();
        out.printin("this.");
        out.print(javaName);
        out.print(" = ");
        out.print(javaName);
        out.println(";");
        if (ctxt.isTagFile()) {
            // Tag files should also set jspContext attributes
            out.printin("jspContext.setAttribute(\"");
            out.print(attrInfos[i].getName());
            out.print("\", ");
            out.print(javaName);
            out.println(");");
        }
        out.popIndent();
        out.printil("}");
        out.println();
    }
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
private void checkNamedAttributes(Node.CustomTag n,
        Node.JspAttribute[] jspAttrs, int start, 
        Hashtable<String, Object> tagDataAttrs)
        throws JasperException {

    TagInfo tagInfo = n.getTagInfo();
    if (tagInfo == null) {
        err.jspError(n, "jsp.error.missing.tagInfo", n.getQName());
    }
    TagAttributeInfo[] tldAttrs = tagInfo.getAttributes();
    Node.Nodes naNodes = n.getNamedAttributeNodes();

    for (int i = 0; i < naNodes.size(); i++) {
        Node.NamedAttribute na = (Node.NamedAttribute) naNodes
                .getNode(i);
        boolean found = false;
        for (int j = 0; j < tldAttrs.length; j++) {
            /*
             * See above comment about namespace matches. For named
             * attributes, we use the prefix instead of URI as the match
             * criterion, because in the case of a JSP document, we'd
             * have to keep track of which namespaces are in scope when
             * parsing a named attribute, in order to determine the URI
             * that the prefix of the named attribute's name matches to.
             */
            String attrPrefix = na.getPrefix();
            if (na.getLocalName().equals(tldAttrs[j].getName())
                    && (attrPrefix == null || attrPrefix.length() == 0 || attrPrefix
                            .equals(n.getPrefix()))) {
                jspAttrs[start + i] = new Node.JspAttribute(na,
                        tldAttrs[j], false);
                NamedAttributeVisitor nav = null;
                if (na.getBody() != null) {
                    nav = new NamedAttributeVisitor();
                    na.getBody().visit(nav);
                }
                if (nav != null && nav.hasDynamicContent()) {
                    tagDataAttrs.put(na.getName(),
                            TagData.REQUEST_TIME_VALUE);
                } else {
                    tagDataAttrs.put(na.getName(), na.getText());
                }
                found = true;
                break;
            }
        }
        if (!found) {
            if (tagInfo.hasDynamicAttributes()) {
                jspAttrs[start + i] = new Node.JspAttribute(na, null,
                        true);
            } else {
                err.jspError(n, "jsp.error.bad_attribute",
                        na.getName(), n.getLocalName());
            }
        }
    }
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
/**
 * Generates declarations for tag handler attributes, and defines the getter
 * and setter methods for each.
 */
private void generateTagHandlerAttributes(TagInfo tagInfo)
        throws JasperException {

    if (tagInfo.hasDynamicAttributes()) {
        out.printil("private java.util.HashMap _jspx_dynamic_attrs = new java.util.HashMap();");
    }

    // Declare attributes
    TagAttributeInfo[] attrInfos = tagInfo.getAttributes();
    for (int i = 0; i < attrInfos.length; i++) {
        out.printin("private ");
        if (attrInfos[i].isFragment()) {
            out.print("javax.servlet.jsp.tagext.JspFragment ");
        } else {
            out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
            out.print(" ");
        }
        out.print(attrInfos[i].getName());
        out.println(";");
    }
    out.println();

    // Define attribute getter and setter methods
    if (attrInfos != null) {
        for (int i = 0; i < attrInfos.length; i++) {
            // getter method
            out.printin("public ");
            if (attrInfos[i].isFragment()) {
                out.print("javax.servlet.jsp.tagext.JspFragment ");
            } else {
                out.print(JspUtil.toJavaSourceType(attrInfos[i]
                        .getTypeName()));
                out.print(" ");
            }
            out.print(toGetterMethod(attrInfos[i].getName()));
            out.println(" {");
            out.pushIndent();
            out.printin("return this.");
            out.print(attrInfos[i].getName());
            out.println(";");
            out.popIndent();
            out.printil("}");
            out.println();

            // setter method
            out.printin("public void ");
            out.print(toSetterMethodName(attrInfos[i].getName()));
            if (attrInfos[i].isFragment()) {
                out.print("(javax.servlet.jsp.tagext.JspFragment ");
            } else {
                out.print("(");
                out.print(JspUtil.toJavaSourceType(attrInfos[i]
                        .getTypeName()));
                out.print(" ");
            }
            out.print(attrInfos[i].getName());
            out.println(") {");
            out.pushIndent();
            out.printin("this.");
            out.print(attrInfos[i].getName());
            out.print(" = ");
            out.print(attrInfos[i].getName());
            out.println(";");
            if (ctxt.isTagFile()) {
                // Tag files should also set jspContext attributes
                out.printin("jspContext.setAttribute(\"");
                out.print(attrInfos[i].getName());
                out.print("\", ");
                out.print(attrInfos[i].getName());
                out.println(");");
            }
            out.popIndent();
            out.printil("}");
            out.println();
        }
    }
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
@Override
public void visit(Node.CustomTag n) throws JasperException {

	TagInfo tagInfo = n.getTagInfo();
	if (tagInfo == null) {
		err.jspError(n, "jsp.error.missing.tagInfo", n.getQName());
	}

	/*
	 * The bodycontent of a SimpleTag cannot be JSP.
	 */
	if (n.implementsSimpleTag() && tagInfo.getBodyContent().equalsIgnoreCase(TagInfo.BODY_CONTENT_JSP)) {
		err.jspError(n, "jsp.error.simpletag.badbodycontent", tagInfo.getTagClassName());
	}

	/*
	 * If the tag handler declares in the TLD that it supports dynamic
	 * attributes, it also must implement the DynamicAttributes
	 * interface.
	 */
	if (tagInfo.hasDynamicAttributes() && !n.implementsDynamicAttributes()) {
		err.jspError(n, "jsp.error.dynamic.attributes.not.implemented", n.getQName());
	}

	/*
	 * Make sure all required attributes are present, either as
	 * attributes or named attributes (<jsp:attribute>). Also make sure
	 * that the same attribute is not specified in both attributes or
	 * named attributes.
	 */
	TagAttributeInfo[] tldAttrs = tagInfo.getAttributes();
	String customActionUri = n.getURI();
	Attributes attrs = n.getAttributes();
	int attrsSize = (attrs == null) ? 0 : attrs.getLength();
	for (int i = 0; i < tldAttrs.length; i++) {
		String attr = null;
		if (attrs != null) {
			attr = attrs.getValue(tldAttrs[i].getName());
			if (attr == null) {
				attr = attrs.getValue(customActionUri, tldAttrs[i].getName());
			}
		}
		Node.NamedAttribute na = n.getNamedAttributeNode(tldAttrs[i].getName());

		if (tldAttrs[i].isRequired() && attr == null && na == null) {
			err.jspError(n, "jsp.error.missing_attribute", tldAttrs[i].getName(), n.getLocalName());
		}
		if (attr != null && na != null) {
			err.jspError(n, "jsp.error.duplicate.name.jspattribute", tldAttrs[i].getName());
		}
	}

	Node.Nodes naNodes = n.getNamedAttributeNodes();
	int jspAttrsSize = naNodes.size() + attrsSize;
	Node.JspAttribute[] jspAttrs = null;
	if (jspAttrsSize > 0) {
		jspAttrs = new Node.JspAttribute[jspAttrsSize];
	}
	Hashtable<String, Object> tagDataAttrs = new Hashtable<String, Object>(attrsSize);

	checkXmlAttributes(n, jspAttrs, tagDataAttrs);
	checkNamedAttributes(n, jspAttrs, attrsSize, tagDataAttrs);

	TagData tagData = new TagData(tagDataAttrs);

	// JSP.C1: It is a (translation time) error for an action that
	// has one or more variable subelements to have a TagExtraInfo
	// class that returns a non-null object.
	TagExtraInfo tei = tagInfo.getTagExtraInfo();
	if (tei != null && tei.getVariableInfo(tagData) != null && tei.getVariableInfo(tagData).length > 0
			&& tagInfo.getTagVariableInfos().length > 0) {
		err.jspError("jsp.error.non_null_tei_and_var_subelems", n.getQName());
	}

	n.setTagData(tagData);
	n.setJspAttributes(jspAttrs);

	visitBody(n);
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
private void checkNamedAttributes(Node.CustomTag n, Node.JspAttribute[] jspAttrs, int start,
		Hashtable<String, Object> tagDataAttrs) throws JasperException {

	TagInfo tagInfo = n.getTagInfo();
	if (tagInfo == null) {
		err.jspError(n, "jsp.error.missing.tagInfo", n.getQName());
	}
	TagAttributeInfo[] tldAttrs = tagInfo.getAttributes();
	Node.Nodes naNodes = n.getNamedAttributeNodes();

	for (int i = 0; i < naNodes.size(); i++) {
		Node.NamedAttribute na = (Node.NamedAttribute) naNodes.getNode(i);
		boolean found = false;
		for (int j = 0; j < tldAttrs.length; j++) {
			/*
			 * See above comment about namespace matches. For named
			 * attributes, we use the prefix instead of URI as the match
			 * criterion, because in the case of a JSP document, we'd
			 * have to keep track of which namespaces are in scope when
			 * parsing a named attribute, in order to determine the URI
			 * that the prefix of the named attribute's name matches to.
			 */
			String attrPrefix = na.getPrefix();
			if (na.getLocalName().equals(tldAttrs[j].getName())
					&& (attrPrefix == null || attrPrefix.length() == 0 || attrPrefix.equals(n.getPrefix()))) {
				jspAttrs[start + i] = new Node.JspAttribute(na, tldAttrs[j], false);
				NamedAttributeVisitor nav = null;
				if (na.getBody() != null) {
					nav = new NamedAttributeVisitor();
					na.getBody().visit(nav);
				}
				if (nav != null && nav.hasDynamicContent()) {
					tagDataAttrs.put(na.getName(), TagData.REQUEST_TIME_VALUE);
				} else {
					tagDataAttrs.put(na.getName(), na.getText());
				}
				found = true;
				break;
			}
		}
		if (!found) {
			if (tagInfo.hasDynamicAttributes()) {
				jspAttrs[start + i] = new Node.JspAttribute(na, null, true);
			} else {
				err.jspError(n, "jsp.error.bad_attribute", na.getName(), n.getLocalName());
			}
		}
	}
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
/**
 * Determine the body type of <jsp:attribute> from the enclosing node
 */
private String getAttributeBodyType(Node n, String name) {

	if (n instanceof Node.CustomTag) {
		TagInfo tagInfo = ((Node.CustomTag) n).getTagInfo();
		TagAttributeInfo[] tldAttrs = tagInfo.getAttributes();
		for (int i = 0; i < tldAttrs.length; i++) {
			if (name.equals(tldAttrs[i].getName())) {
				if (tldAttrs[i].isFragment()) {
					return TagInfo.BODY_CONTENT_SCRIPTLESS;
				}
				if (tldAttrs[i].canBeRequestTime()) {
					return TagInfo.BODY_CONTENT_JSP;
				}
			}
		}
		if (tagInfo.hasDynamicAttributes()) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.IncludeAction) {
		if ("page".equals(name)) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.ForwardAction) {
		if ("page".equals(name)) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.SetProperty) {
		if ("value".equals(name)) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.UseBean) {
		if ("beanName".equals(name)) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.PlugIn) {
		if ("width".equals(name) || "height".equals(name)) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.ParamAction) {
		if ("value".equals(name)) {
			return TagInfo.BODY_CONTENT_JSP;
		}
	} else if (n instanceof Node.JspElement) {
		return TagInfo.BODY_CONTENT_JSP;
	}

	return JAVAX_BODY_CONTENT_TEMPLATE_TEXT;
}
 

import javax.servlet.jsp.tagext.TagInfo; //导入方法依赖的package包/类
/**
 * Generates declarations for tag handler attributes, and defines the getter
 * and setter methods for each.
 */
private void generateTagHandlerAttributes(TagInfo tagInfo) {

	if (tagInfo.hasDynamicAttributes()) {
		out.printil("private java.util.HashMap _jspx_dynamic_attrs = new java.util.HashMap();");
	}

	// Declare attributes
	TagAttributeInfo[] attrInfos = tagInfo.getAttributes();
	for (int i = 0; i < attrInfos.length; i++) {
		out.printin("private ");
		if (attrInfos[i].isFragment()) {
			out.print("javax.servlet.jsp.tagext.JspFragment ");
		} else {
			out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
			out.print(" ");
		}
		out.print(JspUtil.makeJavaIdentifierForAttribute(attrInfos[i].getName()));
		out.println(";");
	}
	out.println();

	// Define attribute getter and setter methods
	for (int i = 0; i < attrInfos.length; i++) {
		String javaName = JspUtil.makeJavaIdentifierForAttribute(attrInfos[i].getName());

		// getter method
		out.printin("public ");
		if (attrInfos[i].isFragment()) {
			out.print("javax.servlet.jsp.tagext.JspFragment ");
		} else {
			out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
			out.print(" ");
		}
		out.print(toGetterMethod(attrInfos[i].getName()));
		out.println(" {");
		out.pushIndent();
		out.printin("return this.");
		out.print(javaName);
		out.println(";");
		out.popIndent();
		out.printil("}");
		out.println();

		// setter method
		out.printin("public void ");
		out.print(toSetterMethodName(attrInfos[i].getName()));
		if (attrInfos[i].isFragment()) {
			out.print("(javax.servlet.jsp.tagext.JspFragment ");
		} else {
			out.print("(");
			out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
			out.print(" ");
		}
		out.print(javaName);
		out.println(") {");
		out.pushIndent();
		out.printin("this.");
		out.print(javaName);
		out.print(" = ");
		out.print(javaName);
		out.println(";");
		if (ctxt.isTagFile()) {
			// Tag files should also set jspContext attributes
			out.printin("jspContext.setAttribute(\"");
			out.print(attrInfos[i].getName());
			out.print("\", ");
			out.print(javaName);
			out.println(");");
		}
		out.popIndent();
		out.printil("}");
		out.println();
	}
}