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Tomcat example source code file (TagLibraryInfoImpl.java)

This example Tomcat source code file (TagLibraryInfoImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

ignored, io, iterator, iterator, jasperexception, jsp, net, network, servlet, string, string, taglibraryinfo, taglibraryvalidator, tagvariableinfo, treenode, treenode, url, util, vector, vector

The Tomcat TagLibraryInfoImpl.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jasper.compiler;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.JarURLConnection;
import java.net.URL;
import java.util.Collection;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Vector;
import java.util.jar.JarFile;
import java.util.zip.ZipEntry;

import javax.servlet.jsp.tagext.FunctionInfo;
import javax.servlet.jsp.tagext.PageData;
import javax.servlet.jsp.tagext.TagAttributeInfo;
import javax.servlet.jsp.tagext.TagExtraInfo;
import javax.servlet.jsp.tagext.TagFileInfo;
import javax.servlet.jsp.tagext.TagInfo;
import javax.servlet.jsp.tagext.TagLibraryInfo;
import javax.servlet.jsp.tagext.TagLibraryValidator;
import javax.servlet.jsp.tagext.TagVariableInfo;
import javax.servlet.jsp.tagext.ValidationMessage;
import javax.servlet.jsp.tagext.VariableInfo;

import org.apache.jasper.JasperException;
import org.apache.jasper.JspCompilationContext;
import org.apache.jasper.xmlparser.ParserUtils;
import org.apache.jasper.xmlparser.TreeNode;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;

/**
 * Implementation of the TagLibraryInfo class from the JSP spec.
 * 
 * @author Anil K. Vijendran
 * @author Mandar Raje
 * @author Pierre Delisle
 * @author Kin-man Chung
 * @author Jan Luehe
 */
class TagLibraryInfoImpl extends TagLibraryInfo implements TagConstants {

    // Logger
    private Log log = LogFactory.getLog(TagLibraryInfoImpl.class);

    private JspCompilationContext ctxt;
    
    private PageInfo pi;

    private ErrorDispatcher err;

    private ParserController parserController;

    private final void print(String name, String value, PrintWriter w) {
        if (value != null) {
            w.print(name + " = {\n\t");
            w.print(value);
            w.print("\n}\n");
        }
    }

    public String toString() {
        StringWriter sw = new StringWriter();
        PrintWriter out = new PrintWriter(sw);
        print("tlibversion", tlibversion, out);
        print("jspversion", jspversion, out);
        print("shortname", shortname, out);
        print("urn", urn, out);
        print("info", info, out);
        print("uri", uri, out);
        print("tagLibraryValidator", "" + tagLibraryValidator, out);

        for (int i = 0; i < tags.length; i++)
            out.println(tags[i].toString());

        for (int i = 0; i < tagFiles.length; i++)
            out.println(tagFiles[i].toString());

        for (int i = 0; i < functions.length; i++)
            out.println(functions[i].toString());

        return sw.toString();
    }

    // XXX FIXME
    // resolveRelativeUri and/or getResourceAsStream don't seem to properly
    // handle relative paths when dealing when home and getDocBase are set
    // the following is a workaround until these problems are resolved.
    private InputStream getResourceAsStream(String uri)
            throws FileNotFoundException {
        try {
            // see if file exists on the filesystem first
            String real = ctxt.getRealPath(uri);
            if (real == null) {
                return ctxt.getResourceAsStream(uri);
            } else {
                return new FileInputStream(real);
            }
        } catch (FileNotFoundException ex) {
            // if file not found on filesystem, get the resource through
            // the context
            return ctxt.getResourceAsStream(uri);
        }

    }

    /**
     * Constructor.
     */
    public TagLibraryInfoImpl(JspCompilationContext ctxt, ParserController pc, PageInfo pi,
            String prefix, String uriIn, String[] location, ErrorDispatcher err)
            throws JasperException {
        super(prefix, uriIn);

        this.ctxt = ctxt;
        this.parserController = pc;
        this.pi = pi;
        this.err = err;
        InputStream in = null;
        JarFile jarFile = null;

        if (location == null) {
            // The URI points to the TLD itself or to a JAR file in which the
            // TLD is stored
            location = generateTLDLocation(uri, ctxt);
        }

        try {
            if (!location[0].endsWith("jar")) {
                // Location points to TLD file
                try {
                    in = getResourceAsStream(location[0]);
                    if (in == null) {
                        throw new FileNotFoundException(location[0]);
                    }
                } catch (FileNotFoundException ex) {
                    err.jspError("jsp.error.file.not.found", location[0]);
                }

                parseTLD(ctxt, location[0], in, null);
                // Add TLD to dependency list
                PageInfo pageInfo = ctxt.createCompiler().getPageInfo();
                if (pageInfo != null) {
                    pageInfo.addDependant(location[0]);
                }
            } else {
                // Tag library is packaged in JAR file
                try {
                    URL jarFileUrl = new URL("jar:" + location[0] + "!/");
                    JarURLConnection conn = (JarURLConnection) jarFileUrl
                            .openConnection();
                    conn.setUseCaches(false);
                    conn.connect();
                    jarFile = conn.getJarFile();
                    ZipEntry jarEntry = jarFile.getEntry(location[1]);
                    in = jarFile.getInputStream(jarEntry);
                    parseTLD(ctxt, location[0], in, jarFileUrl);
                } catch (Exception ex) {
                    err.jspError("jsp.error.tld.unable_to_read", location[0],
                            location[1], ex.toString());
                }
            }
        } finally {
            if (in != null) {
                try {
                    in.close();
                } catch (Throwable t) {
                }
            }
            if (jarFile != null) {
                try {
                    jarFile.close();
                } catch (Throwable t) {
                }
            }
        }

    }

    public TagLibraryInfo[] getTagLibraryInfos() {
        Collection coll = pi.getTaglibs();
        return (TagLibraryInfo[]) coll.toArray(new TagLibraryInfo[0]);
    }
    
    /*
     * @param ctxt The JSP compilation context @param uri The TLD's uri @param
     * in The TLD's input stream @param jarFileUrl The JAR file containing the
     * TLD, or null if the tag library is not packaged in a JAR
     */
    private void parseTLD(JspCompilationContext ctxt, String uri,
            InputStream in, URL jarFileUrl) throws JasperException {
        Vector tagVector = new Vector();
        Vector tagFileVector = new Vector();
        Hashtable functionTable = new Hashtable();

        // Create an iterator over the child elements of our <taglib> element
        ParserUtils pu = new ParserUtils();
        TreeNode tld = pu.parseXMLDocument(uri, in);

        // Check to see if the <taglib> root element contains a 'version'
        // attribute, which was added in JSP 2.0 to replace the <jsp-version>
        // subelement
        this.jspversion = tld.findAttribute("version");

        // Process each child element of our <taglib> element
        Iterator list = tld.findChildren();

        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();

            if ("tlibversion".equals(tname) // JSP 1.1
                    || "tlib-version".equals(tname)) { // JSP 1.2
                this.tlibversion = element.getBody();
            } else if ("jspversion".equals(tname)
                    || "jsp-version".equals(tname)) {
                this.jspversion = element.getBody();
            } else if ("shortname".equals(tname) || "short-name".equals(tname))
                this.shortname = element.getBody();
            else if ("uri".equals(tname))
                this.urn = element.getBody();
            else if ("info".equals(tname) || "description".equals(tname))
                this.info = element.getBody();
            else if ("validator".equals(tname))
                this.tagLibraryValidator = createValidator(element);
            else if ("tag".equals(tname))
                tagVector.addElement(createTagInfo(element, jspversion));
            else if ("tag-file".equals(tname)) {
                TagFileInfo tagFileInfo = createTagFileInfo(element, uri,
                        jarFileUrl);
                tagFileVector.addElement(tagFileInfo);
            } else if ("function".equals(tname)) { // JSP2.0
                FunctionInfo funcInfo = createFunctionInfo(element);
                String funcName = funcInfo.getName();
                if (functionTable.containsKey(funcName)) {
                    err.jspError("jsp.error.tld.fn.duplicate.name", funcName,
                            uri);

                }
                functionTable.put(funcName, funcInfo);
            } else if ("display-name".equals(tname) || // Ignored elements
                    "small-icon".equals(tname) || "large-icon".equals(tname)
                    || "listener".equals(tname)) {
                ;
            } else if ("taglib-extension".equals(tname)) {
                // Recognized but ignored
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.taglib", tname));
                }
            }

        }

        if (tlibversion == null) {
            err.jspError("jsp.error.tld.mandatory.element.missing",
                    "tlib-version");
        }
        if (jspversion == null) {
            err.jspError("jsp.error.tld.mandatory.element.missing",
                    "jsp-version");
        }

        this.tags = new TagInfo[tagVector.size()];
        tagVector.copyInto(this.tags);

        this.tagFiles = new TagFileInfo[tagFileVector.size()];
        tagFileVector.copyInto(this.tagFiles);

        this.functions = new FunctionInfo[functionTable.size()];
        int i = 0;
        Enumeration enumeration = functionTable.elements();
        while (enumeration.hasMoreElements()) {
            this.functions[i++] = (FunctionInfo) enumeration.nextElement();
        }
    }

    /*
     * @param uri The uri of the TLD @param ctxt The compilation context
     * 
     * @return String array whose first element denotes the path to the TLD. If
     * the path to the TLD points to a jar file, then the second element denotes
     * the name of the TLD entry in the jar file, which is hardcoded to
     * META-INF/taglib.tld.
     */
    private String[] generateTLDLocation(String uri, JspCompilationContext ctxt)
            throws JasperException {

        int uriType = TldLocationsCache.uriType(uri);
        if (uriType == TldLocationsCache.ABS_URI) {
            err.jspError("jsp.error.taglibDirective.absUriCannotBeResolved",
                    uri);
        } else if (uriType == TldLocationsCache.NOROOT_REL_URI) {
            uri = ctxt.resolveRelativeUri(uri);
        }

        String[] location = new String[2];
        location[0] = uri;
        if (location[0].endsWith("jar")) {
            URL url = null;
            try {
                url = ctxt.getResource(location[0]);
            } catch (Exception ex) {
                err.jspError("jsp.error.tld.unable_to_get_jar", location[0], ex
                        .toString());
            }
            if (url == null) {
                err.jspError("jsp.error.tld.missing_jar", location[0]);
            }
            location[0] = url.toString();
            location[1] = "META-INF/taglib.tld";
        }

        return location;
    }

    private TagInfo createTagInfo(TreeNode elem, String jspVersion)
            throws JasperException {

        String tagName = null;
        String tagClassName = null;
        String teiClassName = null;

        /*
         * Default body content for JSP 1.2 tag handlers (<body-content> has
         * become mandatory in JSP 2.0, because the default would be invalid for
         * simple tag handlers)
         */
        String bodycontent = "JSP";

        String info = null;
        String displayName = null;
        String smallIcon = null;
        String largeIcon = null;
        boolean dynamicAttributes = false;

        Vector attributeVector = new Vector();
        Vector variableVector = new Vector();
        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();

            if ("name".equals(tname)) {
                tagName = element.getBody();
            } else if ("tagclass".equals(tname) || "tag-class".equals(tname)) {
                tagClassName = element.getBody();
            } else if ("teiclass".equals(tname) || "tei-class".equals(tname)) {
                teiClassName = element.getBody();
            } else if ("bodycontent".equals(tname)
                    || "body-content".equals(tname)) {
                bodycontent = element.getBody();
            } else if ("display-name".equals(tname)) {
                displayName = element.getBody();
            } else if ("small-icon".equals(tname)) {
                smallIcon = element.getBody();
            } else if ("large-icon".equals(tname)) {
                largeIcon = element.getBody();
            } else if ("icon".equals(tname)) {
                TreeNode icon = element.findChild("small-icon");
                if (icon != null) {
                    smallIcon = icon.getBody();
                }
                icon = element.findChild("large-icon");
                if (icon != null) {
                    largeIcon = icon.getBody();
                }
            } else if ("info".equals(tname) || "description".equals(tname)) {
                info = element.getBody();
            } else if ("variable".equals(tname)) {
                variableVector.addElement(createVariable(element));
            } else if ("attribute".equals(tname)) {
                attributeVector
                        .addElement(createAttribute(element, jspVersion));
            } else if ("dynamic-attributes".equals(tname)) {
                dynamicAttributes = JspUtil.booleanValue(element.getBody());
            } else if ("example".equals(tname)) {
                // Ignored elements
            } else if ("tag-extension".equals(tname)) {
                // Ignored
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.tag", tname));
                }
            }
        }

        TagExtraInfo tei = null;
        if (teiClassName != null && !teiClassName.equals("")) {
            try {
                Class teiClass = ctxt.getClassLoader().loadClass(teiClassName);
                tei = (TagExtraInfo) teiClass.newInstance();
            } catch (Exception e) {
                err.jspError("jsp.error.teiclass.instantiation", teiClassName,
                        e);
            }
        }

        TagAttributeInfo[] tagAttributeInfo = new TagAttributeInfo[attributeVector
                .size()];
        attributeVector.copyInto(tagAttributeInfo);

        TagVariableInfo[] tagVariableInfos = new TagVariableInfo[variableVector
                .size()];
        variableVector.copyInto(tagVariableInfos);

        TagInfo taginfo = new TagInfo(tagName, tagClassName, bodycontent, info,
                this, tei, tagAttributeInfo, displayName, smallIcon, largeIcon,
                tagVariableInfos, dynamicAttributes);
        return taginfo;
    }

    /*
     * Parses the tag file directives of the given TagFile and turns them into a
     * TagInfo.
     * 
     * @param elem The <tag-file> element in the TLD @param uri The location of
     * the TLD, in case the tag file is specified relative to it @param jarFile
     * The JAR file, in case the tag file is packaged in a JAR
     * 
     * @return TagInfo correspoding to tag file directives
     */
    private TagFileInfo createTagFileInfo(TreeNode elem, String uri,
            URL jarFileUrl) throws JasperException {

        String name = null;
        String path = null;

        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode child = (TreeNode) list.next();
            String tname = child.getName();
            if ("name".equals(tname)) {
                name = child.getBody();
            } else if ("path".equals(tname)) {
                path = child.getBody();
            } else if ("example".equals(tname)) {
                // Ignore <example> element: Bugzilla 33538
            } else if ("tag-extension".equals(tname)) {
                // Ignore <tag-extension> element: Bugzilla 33538
            } else if ("icon".equals(tname) 
                    || "display-name".equals(tname) 
                    || "description".equals(tname)) {
                // Ignore these elements: Bugzilla 38015
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.tagfile", tname));
                }
            }
        }

        if (path.startsWith("/META-INF/tags")) {
            // Tag file packaged in JAR
            ctxt.setTagFileJarUrl(path, jarFileUrl);
        } else if (!path.startsWith("/WEB-INF/tags")) {
            err.jspError("jsp.error.tagfile.illegalPath", path);
        }

        TagInfo tagInfo = TagFileProcessor.parseTagFileDirectives(
                parserController, name, path, this);
        return new TagFileInfo(name, path, tagInfo);
    }

    TagAttributeInfo createAttribute(TreeNode elem, String jspVersion) {
        String name = null;
        String type = null;
        String expectedType = null;
        String methodSignature = null;
        boolean required = false, rtexprvalue = false, reqTime = false, isFragment = false, deferredValue = false, deferredMethod = false;

        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();

            if ("name".equals(tname)) {
                name = element.getBody();
            } else if ("required".equals(tname)) {
                String s = element.getBody();
                if (s != null)
                    required = JspUtil.booleanValue(s);
            } else if ("rtexprvalue".equals(tname)) {
                String s = element.getBody();
                if (s != null)
                    rtexprvalue = JspUtil.booleanValue(s);
            } else if ("type".equals(tname)) {
                type = element.getBody();
                if ("1.2".equals(jspVersion)
                        && (type.equals("Boolean") || type.equals("Byte")
                                || type.equals("Character")
                                || type.equals("Double")
                                || type.equals("Float")
                                || type.equals("Integer")
                                || type.equals("Long") || type.equals("Object")
                                || type.equals("Short") || type
                                .equals("String"))) {
                    type = "java.lang." + type;
                }
            } else if ("fragment".equals(tname)) {
                String s = element.getBody();
                if (s != null) {
                    isFragment = JspUtil.booleanValue(s);
                }
            } else if ("deferred-value".equals(tname)) {
                deferredValue = true;
                type = "javax.el.ValueExpression";
                TreeNode child = element.findChild("type");
                if (child != null) {
                    expectedType = child.getBody();
                    if (expectedType != null) {
                        expectedType = expectedType.trim();
                    }
                } else {
                    expectedType = "java.lang.Object";
                }
            } else if ("deferred-method".equals(tname)) {
                deferredMethod = true;
                type = "javax.el.MethodExpression";
                TreeNode child = element.findChild("method-signature");
                if (child != null) {
                    methodSignature = child.getBody();
                    if (methodSignature != null) {
                        methodSignature = methodSignature.trim();
                    }
                } else {
                    methodSignature = "java.lang.Object method()";
                }
            } else if ("description".equals(tname) || // Ignored elements
            false) {
                ;
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.attribute", tname));
                }
            }
        }

        if (isFragment) {
            /*
             * According to JSP.C-3 ("TLD Schema Element Structure - tag"),
             * 'type' and 'rtexprvalue' must not be specified if 'fragment' has
             * been specified (this will be enforced by validating parser).
             * Also, if 'fragment' is TRUE, 'type' is fixed at
             * javax.servlet.jsp.tagext.JspFragment, and 'rtexprvalue' is fixed
             * at true. See also JSP.8.5.2.
             */
            type = "javax.servlet.jsp.tagext.JspFragment";
            rtexprvalue = true;
        }

        if (!rtexprvalue && type == null) {
            // According to JSP spec, for static values (those determined at
            // translation time) the type is fixed at java.lang.String.
            type = "java.lang.String";
        }
        
        return new TagAttributeInfo(name, required, type, rtexprvalue,
                isFragment, null, deferredValue, deferredMethod, expectedType,
                methodSignature);
    }

    TagVariableInfo createVariable(TreeNode elem) {
        String nameGiven = null;
        String nameFromAttribute = null;
        String className = "java.lang.String";
        boolean declare = true;
        int scope = VariableInfo.NESTED;

        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();
            if ("name-given".equals(tname))
                nameGiven = element.getBody();
            else if ("name-from-attribute".equals(tname))
                nameFromAttribute = element.getBody();
            else if ("variable-class".equals(tname))
                className = element.getBody();
            else if ("declare".equals(tname)) {
                String s = element.getBody();
                if (s != null)
                    declare = JspUtil.booleanValue(s);
            } else if ("scope".equals(tname)) {
                String s = element.getBody();
                if (s != null) {
                    if ("NESTED".equals(s)) {
                        scope = VariableInfo.NESTED;
                    } else if ("AT_BEGIN".equals(s)) {
                        scope = VariableInfo.AT_BEGIN;
                    } else if ("AT_END".equals(s)) {
                        scope = VariableInfo.AT_END;
                    }
                }
            } else if ("description".equals(tname) || // Ignored elements
            false) {
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.variable", tname));
                }
            }
        }
        return new TagVariableInfo(nameGiven, nameFromAttribute, className,
                declare, scope);
    }

    private TagLibraryValidator createValidator(TreeNode elem)
            throws JasperException {

        String validatorClass = null;
        Map initParams = new Hashtable();

        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();
            if ("validator-class".equals(tname))
                validatorClass = element.getBody();
            else if ("init-param".equals(tname)) {
                String[] initParam = createInitParam(element);
                initParams.put(initParam[0], initParam[1]);
            } else if ("description".equals(tname) || // Ignored elements
            false) {
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.validator", tname));
                }
            }
        }

        TagLibraryValidator tlv = null;
        if (validatorClass != null && !validatorClass.equals("")) {
            try {
                Class tlvClass = ctxt.getClassLoader()
                        .loadClass(validatorClass);
                tlv = (TagLibraryValidator) tlvClass.newInstance();
            } catch (Exception e) {
                err.jspError("jsp.error.tlvclass.instantiation",
                        validatorClass, e);
            }
        }
        if (tlv != null) {
            tlv.setInitParameters(initParams);
        }
        return tlv;
    }

    String[] createInitParam(TreeNode elem) {
        String[] initParam = new String[2];

        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();
            if ("param-name".equals(tname)) {
                initParam[0] = element.getBody();
            } else if ("param-value".equals(tname)) {
                initParam[1] = element.getBody();
            } else if ("description".equals(tname)) {
                ; // Do nothing
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.initParam", tname));
                }
            }
        }
        return initParam;
    }

    FunctionInfo createFunctionInfo(TreeNode elem) {

        String name = null;
        String klass = null;
        String signature = null;

        Iterator list = elem.findChildren();
        while (list.hasNext()) {
            TreeNode element = (TreeNode) list.next();
            String tname = element.getName();

            if ("name".equals(tname)) {
                name = element.getBody();
            } else if ("function-class".equals(tname)) {
                klass = element.getBody();
            } else if ("function-signature".equals(tname)) {
                signature = element.getBody();
            } else if ("display-name".equals(tname) || // Ignored elements
                    "small-icon".equals(tname) || "large-icon".equals(tname)
                    || "description".equals(tname) || "example".equals(tname)) {
            } else {
                if (log.isWarnEnabled()) {
                    log.warn(Localizer.getMessage(
                            "jsp.warning.unknown.element.in.function", tname));
                }
            }
        }

        return new FunctionInfo(name, klass, signature);
    }

    // *********************************************************************
    // Until javax.servlet.jsp.tagext.TagLibraryInfo is fixed

    /**
     * The instance (if any) for the TagLibraryValidator class.
     * 
     * @return The TagLibraryValidator instance, if any.
     */
    public TagLibraryValidator getTagLibraryValidator() {
        return tagLibraryValidator;
    }

    /**
     * Translation-time validation of the XML document associated with the JSP
     * page. This is a convenience method on the associated TagLibraryValidator
     * class.
     * 
     * @param thePage
     *            The JSP page object
     * @return A string indicating whether the page is valid or not.
     */
    public ValidationMessage[] validate(PageData thePage) {
        TagLibraryValidator tlv = getTagLibraryValidator();
        if (tlv == null)
            return null;

        String uri = getURI();
        if (uri.startsWith("/")) {
            uri = URN_JSPTLD + uri;
        }

        return tlv.validate(getPrefixString(), uri, thePage);
    }

    protected TagLibraryValidator tagLibraryValidator;
}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat TagLibraryInfoImpl.java source code file:

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