Example usage for javax.servlet.jsp.tagext VariableInfo NESTED

Introduction

In this page you can find the example usage for javax.servlet.jsp.tagext VariableInfo NESTED.

Prototype

int NESTED

To view the source code for javax.servlet.jsp.tagext VariableInfo NESTED.

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Document

Scope information that scripting variable is visible only within the start/end tags.

Usage

From source file:ch.entwine.weblounge.taglib.content.ContentIteratorTagExtraInfo.java

/**
 * Returns the information on the exported tag variables.
 * /*  w w w  . j  a  va2s .co m*/
 * @see javax.servlet.jsp.tagext.TagExtraInfo#getVariableInfo(javax.servlet.jsp.tagext.TagData)
 */
public VariableInfo[] getVariableInfo(TagData tagData) {
    List<VariableInfo> varinfo = new ArrayList<VariableInfo>();

    // Add the default variables
    varinfo.add(new VariableInfo(ContentIteratorTagVariables.INDEX, Integer.class.getName(), true,
            VariableInfo.NESTED));
    varinfo.add(new VariableInfo(ContentIteratorTagVariables.ITERATIONS, Integer.class.getName(), true,
            VariableInfo.NESTED));

    // Define elements
    String elements = tagData.getAttributeString("elements");
    if (StringUtils.isNotBlank(elements)) {
        try {
            TagVariableDefinitions elementVariables = TagVariableDefinitionParser.parse(elements);
            for (TagVariableDefinition def : elementVariables) {
                String name = def.getAlias() != null ? def.getAlias() : def.getName();
                varinfo.add(new VariableInfo(name, String.class.getName(), true, VariableInfo.NESTED));
            }
        } catch (ParseException e) {
            logger.info("Error parsing element definition '{}': {}", elements, e.getMessage());
        }
    }

    // Define properties
    String properties = tagData.getAttributeString("properties");
    if (StringUtils.isNotBlank(properties)) {
        try {
            TagVariableDefinitions propertyVariables = TagVariableDefinitionParser.parse(properties);
            for (TagVariableDefinition def : propertyVariables) {
                String name = def.getAlias() != null ? def.getAlias() : def.getName();
                varinfo.add(new VariableInfo(name, String.class.getName(), true, VariableInfo.NESTED));
            }
        } catch (ParseException e) {
            logger.info("Error parsing property definition '{}': {}", properties, e.getMessage());
        }
    }

    return varinfo.toArray(new VariableInfo[varinfo.size()]);
}

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From source file:org.apache.jasper.compiler.TagLibraryInfoImpl.java

TagVariableInfo createVariable(TreeNode elem) {
    String nameGiven = null;//  w w w.  j a  v a 2  s .co m
    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);
}

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From source file:org.apache.jasper.runtime.JspContextWrapper.java

/**
 * Synchronize variables before fragment invokation
 */
public void syncBeforeInvoke() {
    copyTagToPageScope(VariableInfo.NESTED);
    copyTagToPageScope(VariableInfo.AT_BEGIN);
}

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From source file:org.apache.jasper.runtime.JspContextWrapper.java

/**
 * Copies the variables of the given scope from the virtual page scope of
 * this JSP context wrapper to the page scope of the invoking JSP context.
 *
 * @param scope variable scope (one of NESTED, AT_BEGIN, or AT_END)
 *//*  w ww .j  av  a  2s.  c  om*/
private void copyTagToPageScope(int scope) {
    Iterator iter = null;

    switch (scope) {
    case VariableInfo.NESTED:
        if (nestedVars != null) {
            iter = nestedVars.iterator();
        }
        break;
    case VariableInfo.AT_BEGIN:
        if (atBeginVars != null) {
            iter = atBeginVars.iterator();
        }
        break;
    case VariableInfo.AT_END:
        if (atEndVars != null) {
            iter = atEndVars.iterator();
        }
        break;
    }

    while ((iter != null) && iter.hasNext()) {
        String varName = (String) iter.next();
        Object obj = getAttribute(varName);
        varName = findAlias(varName);
        if (obj != null) {
            invokingJspCtxt.setAttribute(varName, obj);
        } else {
            invokingJspCtxt.removeAttribute(varName, PAGE_SCOPE);
        }
    }
}

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From source file:org.seasar.mayaa.impl.engine.processor.JspProcessor.java

protected void operateNestedVariables(NestedVariableOperator operator) {
    if (Boolean.FALSE.equals(_nestedVariableExists) == false) {
        TLDScriptingVariableInfo variableInfo = getTLDScriptingVariableInfo();
        if (variableInfo != null) {
            AttributeScope pageScope = CycleUtil.getServiceCycle().getPageScope();
            boolean firstHit = true;
            for (Iterator it = variableInfo.variableInfos(); it.hasNext();) {
                VariableInfo info = (VariableInfo) it.next();
                if (info.getScope() == VariableInfo.NESTED) {
                    _nestedVariableExists = Boolean.TRUE;
                    operator.operate(pageScope, info, firstHit);
                    firstHit = false;/*  ww w.j av  a 2s.  com*/
                }
            }
        }
        if (_nestedVariableExists == null) {
            _nestedVariableExists = Boolean.FALSE;
        }
    }
}

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From source file:org.tinygroup.jspengine.compiler.TagLibraryInfoImpl.java

private TagVariableInfo createVariable(TreeNode elem) throws JasperException {

    String nameGiven = null;//  w ww.  ja  va  2 s  . co  m
    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 {
            err.jspError("jsp.error.unknown.element.in.variable", tname);
        }
    }
    return new TagVariableInfo(nameGiven, nameFromAttribute, className, declare, scope);
}

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