javax.servlet.jsp.JspContext Java Examples

public JspContextWrapper(JspContext jspContext,
        ArrayList<String> nestedVars, ArrayList<String> atBeginVars,
        ArrayList<String> atEndVars, Map<String,String> aliases) {
    this.invokingJspCtxt = (PageContext) jspContext;
    if (jspContext instanceof JspContextWrapper) {
        rootJspCtxt = ((JspContextWrapper)jspContext).rootJspCtxt;
    }
    else {
        rootJspCtxt = invokingJspCtxt;
    }
    this.nestedVars = nestedVars;
    this.atBeginVars = atBeginVars;
    this.atEndVars = atEndVars;
    this.pageAttributes = new HashMap<String, Object>(16);
    this.aliases = aliases;

    if (nestedVars != null) {
        this.originalNestedVars = new HashMap<String, Object>(nestedVars.size());
    }
    syncBeginTagFile();
}
 

@Override
public void setValue(ELContext context, Object base, Object property,
        Object value) throws NullPointerException,
        PropertyNotFoundException, PropertyNotWritableException,
        ELException {
    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null) {
        context.setPropertyResolved(true);
        if (property != null) {
            String key = property.toString();
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            int scope = page.getAttributesScope(key);
            if (scope != 0) {
                page.setAttribute(key, value, scope);
            } else {
                page.setAttribute(key, value);
            }
        }
    }
}
 

public JspContextWrapper(JspTag jspTag, JspContext jspContext,
        ArrayList<String> nestedVars, ArrayList<String> atBeginVars,
        ArrayList<String> atEndVars, Map<String,String> aliases) {
    this.jspTag = jspTag;
    this.invokingJspCtxt = (PageContext) jspContext;
    if (jspContext instanceof JspContextWrapper) {
        rootJspCtxt = ((JspContextWrapper)jspContext).rootJspCtxt;
    }
    else {
        rootJspCtxt = invokingJspCtxt;
    }
    this.nestedVars = nestedVars;
    this.atBeginVars = atBeginVars;
    this.atEndVars = atEndVars;
    this.pageAttributes = new HashMap<>(16);
    this.aliases = aliases;

    if (nestedVars != null) {
        this.originalNestedVars = new HashMap<>(nestedVars.size());
    } else {
        this.originalNestedVars = null;
    }
    syncBeginTagFile();
}
 

@Override
public Object getValue(ELContext context, Object base, Object property)
        throws NullPointerException, PropertyNotFoundException, ELException {
    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null) {
        context.setPropertyResolved(true);
        if (property != null) {
            String key = property.toString();
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            return page.findAttribute(key);
        }
    }

    return null;
}
 

/**
 * パンクズリストを表示します。
 * このメソッドはJSP-BODYを評価せずに、
 * 既存のHTMLテンプレート、あるいはクラスコンフィグオーバライドされたHTMLテンプレートを利用します。
 * @throws JspException JSP処理中にエラーが発生した場合
 * @throws IOException 入出力エラーの場合
 */
protected void render() throws JspException, IOException {
    render(new JspFragment() {
        @Override public JspContext getJspContext() {
            return PankuzuTag.this.getJspContext();
        }
        @Override public void invoke(Writer out) throws JspException, IOException {
            JspContext context = getJspContext();
            ViewId vid = (ViewId) context.getAttribute(var);
            String encodedUrl = encodeURL(vid.getUrl());
            String item = Strings.substitute(DEFAULT_TEMPLATE, Maps
                        .hash("url", encodedUrl)
                        .map("label", Strings.escapeHTML(vid.getLabel()))
                        .map("query", trimQueryMarkerIfGetRequestParameterExists(encodedUrl, vid.getQuery())));
            context.getOut().print(item);
        }
    });
}
 

@Override
public Object getValue(ELContext context, Object base, Object property)
        throws NullPointerException, PropertyNotFoundException, ELException {
    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null) {
        context.setPropertyResolved(true);
        if (property != null) {
            String key = property.toString();
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            return page.findAttribute(key);
        }
    }

    return null;
}
 

@Override
public void setValue(ELContext context, Object base, Object property,
        Object value) throws NullPointerException,
        PropertyNotFoundException, PropertyNotWritableException,
        ELException {
    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null) {
        context.setPropertyResolved(true);
        if (property != null) {
            String key = property.toString();
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            int scope = page.getAttributesScope(key);
            if (scope != 0) {
                page.setAttribute(key, value, scope);
            } else {
                page.setAttribute(key, value);
            }
        }
    }
}
 

@Override
public void setValue(ELContext context, Object base, Object property, Object value) {
    Objects.requireNonNull(context);

    if (base == null) {
        context.setPropertyResolved(base, property);
        if (property != null) {
            String key = property.toString();
            PageContext page = (PageContext) context.getContext(JspContext.class);
            int scope = page.getAttributesScope(key);
            if (scope != 0) {
                page.setAttribute(key, value, scope);
            } else {
                page.setAttribute(key, value);
            }
        }
    }
}
 

public JspContextWrapper(JspContext jspContext,
        ArrayList<String> nestedVars, ArrayList<String> atBeginVars,
        ArrayList<String> atEndVars, Map<String,String> aliases) {
    this.invokingJspCtxt = (PageContext) jspContext;
    if (jspContext instanceof JspContextWrapper) {
        rootJspCtxt = ((JspContextWrapper)jspContext).rootJspCtxt;
    }
    else {
        rootJspCtxt = invokingJspCtxt;
    }
    this.nestedVars = nestedVars;
    this.atBeginVars = atBeginVars;
    this.atEndVars = atEndVars;
    this.pageAttributes = new HashMap<String, Object>(16);
    this.aliases = aliases;

    if (nestedVars != null) {
        this.originalNestedVars = new HashMap<String, Object>(nestedVars.size());
    }
    syncBeginTagFile();
}
 

public JspContextWrapper(JspContext jspContext,
                            ArrayList<String> nestedVars,
                            ArrayList<String> atBeginVars,
                            ArrayList<String> atEndVars,
                            Map<String, String> aliases) {
       this.invokingJspCtxt = (PageContext) jspContext;
this.nestedVars = nestedVars;
this.atBeginVars = atBeginVars;
this.atEndVars = atEndVars;
this.pageAttributes = new Hashtable<String, Object>(16);
this.aliases = aliases;

if (nestedVars != null) {
    this.originalNestedVars =
               new HashMap<String, Object>(nestedVars.size());
}
syncBeginTagFile();
   }
 

@Override
public Object getContext(@SuppressWarnings("rawtypes") Class key) {
    if (key == JspContext.class) {
        return pageContext;
    }
    return wrapped.getContext(key);
}
 

@Override
public Object getContext(@SuppressWarnings("rawtypes") Class key) {
    if (key == JspContext.class) {
        return pageContext;
    }
    return wrapped.getContext(key);
}
 

@Override
public Object getContext(@SuppressWarnings("rawtypes") Class key) {
    if (key == JspContext.class) {
        return pageContext;
    }
    return wrapped.getContext(key);
}
 

public ELContext getELContext() {
    if (elContext == null) {
        PageContext pc = invokingJspCtxt;
        while (pc instanceof JspContextWrapper) {
            pc = ((JspContextWrapper)pc).invokingJspCtxt;
        }
        PageContextImpl pci = (PageContextImpl) pc;
        elContext = pci.getJspApplicationContext().createELContext(
                          invokingJspCtxt.getELContext().getELResolver());
        elContext.putContext(javax.servlet.jsp.JspContext.class, this);
        ((ELContextImpl)elContext).setVariableMapper(
            new VariableMapperImpl());
    }
    return elContext;
}
 

@Override
public Object getValue(ELContext context, Object base, Object property) {
    Objects.requireNonNull(context);

    if (base == null && property != null) {
        int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());

        if (idx >= 0) {
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            context.setPropertyResolved(base, property);
            switch (idx) {
            case APPLICATIONSCOPE:
                return ScopeManager.get(page).getApplicationScope();
            case COOKIE:
                return ScopeManager.get(page).getCookie();
            case HEADER:
                return ScopeManager.get(page).getHeader();
            case HEADERVALUES:
                return ScopeManager.get(page).getHeaderValues();
            case INITPARAM:
                return ScopeManager.get(page).getInitParam();
            case PAGECONTEXT:
                return ScopeManager.get(page).getPageContext();
            case PAGESCOPE:
                return ScopeManager.get(page).getPageScope();
            case PARAM:
                return ScopeManager.get(page).getParam();
            case PARAM_VALUES:
                return ScopeManager.get(page).getParamValues();
            case REQUEST_SCOPE:
                return ScopeManager.get(page).getRequestScope();
            case SESSION_SCOPE:
                return ScopeManager.get(page).getSessionScope();
            }
        }
    }
    return null;
}
 

public static String getUid(JspContext context) {
	String uuid = null;
	do {
		long rand = Double.doubleToLongBits(Math.random());
		uuid = Long.toHexString(rand).substring(0, 4);
	} while (context.getAttribute(uuid) != null);
	context.setAttribute(uuid, uuid);
	return uuid;
}
 

public JspFragmentHelper( int discriminator, JspContext jspContext,
    JspTag parentTag )
{
    this.discriminator = discriminator;
    this.jspContext = jspContext;
    if(jspContext instanceof PageContext) {
        _jspx_page_context = (PageContext)jspContext;
    } else {
        _jspx_page_context = null;
    }
    this.parentTag = parentTag;
}
 

public JspContext getJspContext() {
    return this.jspContext;
}
 

@Override
public Object getValue(ELContext context, Object base, Object property)
        throws NullPointerException, PropertyNotFoundException, ELException {
    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null && property != null) {
        int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());

        if (idx >= 0) {
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            context.setPropertyResolved(true);
            switch (idx) {
            case APPLICATIONSCOPE:
                return ScopeManager.get(page).getApplicationScope();
            case COOKIE:
                return ScopeManager.get(page).getCookie();
            case HEADER:
                return ScopeManager.get(page).getHeader();
            case HEADERVALUES:
                return ScopeManager.get(page).getHeaderValues();
            case INITPARAM:
                return ScopeManager.get(page).getInitParam();
            case PAGECONTEXT:
                return ScopeManager.get(page).getPageContext();
            case PAGESCOPE:
                return ScopeManager.get(page).getPageScope();
            case PARAM:
                return ScopeManager.get(page).getParam();
            case PARAM_VALUES:
                return ScopeManager.get(page).getParamValues();
            case REQUEST_SCOPE:
                return ScopeManager.get(page).getRequestScope();
            case SESSION_SCOPE:
                return ScopeManager.get(page).getSessionScope();
            }
        }
    }
    return null;
}
 

@Override
public void doTag () throws JspException, IOException
{
    final JspFragment body = (JspFragment)getJspContext ().getAttribute ( DefineTag.ATTR_PREFIX + this.name );

    if ( body == null )
    {
        throw new JspException ( String.format ( "Unable to find macro '%s'", this.name ) );
    }

    final JspContext ctx = body.getJspContext ();

    // set attributes to body context

    final Map<String, Object> oldEntries = new HashMap<> ( this.data.size () );

    for ( final Map.Entry<String, Object> entry : this.data.entrySet () )
    {
        oldEntries.put ( entry.getKey (), ctx.getAttribute ( entry.getKey (), PageContext.PAGE_SCOPE ) );
        ctx.setAttribute ( entry.getKey (), entry.getValue (), PageContext.PAGE_SCOPE );
    }

    // invoke

    body.invoke ( getJspContext ().getOut () );

    // set old values, so we don't clutter up the context for the next caller

    for ( final String key : this.data.keySet () )
    {
        final Object val = oldEntries.get ( key );
        if ( val == null )
        {
            ctx.removeAttribute ( key, PageContext.PAGE_SCOPE );
        }
        else
        {
            ctx.setAttribute ( key, val, PageContext.PAGE_SCOPE );
        }
    }
}
 

@Override
public JspContext getJspContext() {
	return super.getJspContext();
}
 

@Override
public JspContext getJspContext() {
    return this.jspContext;
}
 

@Test
public void jspFragmentが設定される() throws Exception {

    PartialList<String> display = new PartialList<String>();
    for (int i = 0; i < 110; i++) {
        display.add(Integer.toString(i));
    }
    display.setElementCount(110);
    display.setPartCount(11);
    display.setElementCountPerPart(10);
    display.setPartIndex(7);
    PageNavigationTag tag = new PageNavigationTag();
    tag.setPageContext(context);
    tag.setPartial(display);
    tag.setAction("/list");
    JspFragment fragment = new JspFragment() {

        @Override
        public JspContext getJspContext() {
            return context;
        }

        @Override
        public void invoke(Writer out) throws JspException, IOException {
            out.write("----");
        }
    };
    tag.setOmission(fragment);
    tag.doStartTag();
    tag.doEndTag();
    String actual = resp.getContentAsString();
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_head\">", "");
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_previous\">", "");
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_page\">", "");
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_page_selected\">", "");
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_next\">", "");
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_tail\">", "");
    actual = actual.replaceAll("<span class=\"jfw_paginate_navi_omission\">", "");
    actual = actual.replaceAll("</span>", "\n");
    String[] split = actual.split("\n");
    assertThat(split.length, is(15));
    assertThat(Arrays.asList(split), hasItem("<a href=\"/list?pageNumber=1\">&lt;&lt;</a>"));
    assertThat(Arrays.asList(split), hasItem("<a href=\"/list?pageNumber=6\">&lt;</a>"));
    assertThat(Arrays.asList(split), hasItem("<a href=\"/list?pageNumber=2\">2</a>"));
    assertThat(Arrays.asList(split), hasItem("<a href=\"/list?pageNumber=11\">11</a>"));
    assertThat(Arrays.asList(split), hasItem("7"));
    assertThat(Arrays.asList(split), hasItem("----"));
    assertThat(Arrays.asList(split), hasItem("<a href=\"/list?pageNumber=8\">&gt;</a>"));
    assertThat(Arrays.asList(split), hasItem("<a href=\"/list?pageNumber=11\">&gt;&gt;</a>"));
}
 

@Override
public JspContext getJspContext()
{
    return pageContext;
}
 

/**
 * If the base object is <code>null</code>, and the property matches
 * the name of a JSP implicit object, returns the implicit object.
 *
 * <p>The <code>propertyResolved</code> property of the 
 * <code>ELContext</code> object must be set to <code>true</code> by 
 * this resolver before returning if an implicit object is matched. If 
 * this property is not <code>true</code> after this method is called,
 * the caller should ignore the return value.</p>
 *
 * @param context The context of this evaluation.
 * @param base Only <code>null</code> is handled by this resolver.
 *     Other values will result in an immediate return.
 * @param property The name of the implicit object to resolve.
 * @return If the <code>propertyResolved</code> property of 
 *     <code>ELContext</code> was set to <code>true</code>, then
 *     the implicit object; otherwise undefined.
 * @throws NullPointerException if context is <code>null</code>
 * @throws ELException if an exception was thrown while performing
 *     the property or variable resolution. The thrown exception
 *     must be included as the cause property of this exception, if
 *     available.
 */
public Object getValue(ELContext context,
                       Object base,
                       Object property) {

    if (context == null) {
        throw new NullPointerException();
    }

    if (base != null) {
        return null;
    }

    PageContext ctxt = (PageContext)context.getContext(JspContext.class);
                           
    if ("pageContext".equals(property)) {
        context.setPropertyResolved(true);
        return ctxt;
    }
    ImplicitObjects implicitObjects =
        ImplicitObjects.getImplicitObjects(ctxt);
    if ("pageScope".equals(property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getPageScopeMap();
    }
    if ("requestScope".equals(property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getRequestScopeMap();
    }
    if ("sessionScope".equals(property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getSessionScopeMap();
    }
    if ("applicationScope".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getApplicationScopeMap ();
    }
    if ("param".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getParamMap();
    }
    if ("paramValues".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getParamsMap();
    }
    if ("header".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getHeaderMap();
    }
    if ("headerValues".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getHeadersMap();
    }
    if ("initParam".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getInitParamMap ();
    }
    if ("cookie".equals (property)) {
        context.setPropertyResolved(true);
        return implicitObjects.getCookieMap ();
    }
    return null;
}
 

/**
 * If the base object is <code>null</code>, searches the page, 
 * request, session and application scopes for an attribute with
 * the given name and returns it, or <code>null</code> if no
 * attribute exists with the current name.
 *
 * <p>The <code>propertyResolved</code> property of the 
 * <code>ELContext</code> object must be set to <code>true</code> by 
 * this resolver before returning if base is <code>null</code>. If 
 * this property is not <code>true</code> after this method is called,
 * the caller should ignore the return value.</p>
 *
 * @param context The context of this evaluation.
 * @param base Only <code>null</code> is handled by this resolver.
 *     Other values will result in an immediate return.
 * @param property The name of the scoped attribute to resolve.
 * @return If the <code>propertyResolved</code> property of 
 *     <code>ELContext</code> was set to <code>true</code>, then
 *     the scoped attribute; otherwise undefined.
 * @throws NullPointerException if context is <code>null</code>
 * @throws ELException if an exception was thrown while performing
 *     the property or variable resolution. The thrown exception
 *     must be included as the cause property of this exception, if
 *     available.
 */
public Object getValue(ELContext context,
                       Object base,
                       Object property) {

    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null) {
        context.setPropertyResolved(true);
        if (property instanceof String) {
            String attribute = (String) property;
            PageContext ctxt = (PageContext)
                                   context.getContext(JspContext.class);
            return ctxt.findAttribute(attribute);
        }
    }
    return null;
}
 

@Override
public JspContext getJspContext() {
    return this.jspContext;
}
 

@Override
public Object getValue(ELContext context, Object base, Object property)
        throws NullPointerException, PropertyNotFoundException, ELException {
    if (context == null) {
        throw new NullPointerException();
    }

    if (base == null && property != null) {
        int idx = Arrays.binarySearch(SCOPE_NAMES, property.toString());

        if (idx >= 0) {
            PageContext page = (PageContext) context
                    .getContext(JspContext.class);
            context.setPropertyResolved(true);
            switch (idx) {
            case APPLICATIONSCOPE:
                return ScopeManager.get(page).getApplicationScope();
            case COOKIE:
                return ScopeManager.get(page).getCookie();
            case HEADER:
                return ScopeManager.get(page).getHeader();
            case HEADERVALUES:
                return ScopeManager.get(page).getHeaderValues();
            case INITPARAM:
                return ScopeManager.get(page).getInitParam();
            case PAGECONTEXT:
                return ScopeManager.get(page).getPageContext();
            case PAGESCOPE:
                return ScopeManager.get(page).getPageScope();
            case PARAM:
                return ScopeManager.get(page).getParam();
            case PARAM_VALUES:
                return ScopeManager.get(page).getParamValues();
            case REQUEST_SCOPE:
                return ScopeManager.get(page).getRequestScope();
            case SESSION_SCOPE:
                return ScopeManager.get(page).getSessionScope();
            }
        }
    }
    return null;
}
 

@Override
public Object getValue(ELContext context, Object base, Object property) {
    Objects.requireNonNull(context);

    Object result = null;

    if (base == null) {
        context.setPropertyResolved(base, property);
        if (property != null) {
            String key = property.toString();
            PageContext page = (PageContext) context.getContext(JspContext.class);
            result = page.findAttribute(key);

            if (result == null) {
                boolean resolveClass = true;
                // Performance short-cut available when running on Tomcat
                if (AST_IDENTIFIER_KEY != null) {
                    // Tomcat will set this key to Boolean.TRUE if the
                    // identifier is a stand-alone identifier (i.e.
                    // identifier) rather than part of an AstValue (i.e.
                    // identifier.something). Imports do not need to be
                    // checked if this is a stand-alone identifier
                    Boolean value = (Boolean) context.getContext(AST_IDENTIFIER_KEY);
                    if (value != null && value.booleanValue()) {
                        resolveClass = false;
                    }
                }
                // This might be the name of an imported class
                ImportHandler importHandler = context.getImportHandler();
                if (importHandler != null) {
                    Class<?> clazz = null;
                    if (resolveClass) {
                        clazz = importHandler.resolveClass(key);
                    }
                    if (clazz != null) {
                        result = new ELClass(clazz);
                    }
                    if (result == null) {
                        // This might be the name of an imported static field
                        clazz = importHandler.resolveStatic(key);
                        if (clazz != null) {
                            try {
                                result = clazz.getField(key).get(null);
                            } catch (IllegalArgumentException | IllegalAccessException |
                                    NoSuchFieldException | SecurityException e) {
                                // Most (all?) of these should have been
                                // prevented by the checks when the import
                                // was defined.
                            }
                        }
                    }
                }
            }
        }
    }

    return result;
}
 

public void setJspContext(JspContext arg0) {
	this.jspContext = arg0;
}