portlethref.java

一个比较不错的java分页标签,有源代码,开发者 可以学习学习

                }
            }
            else if (PARAM_STATE.equals(name))
            {
                if (value == null)
                {
                    this.setRequestedState(null);
                }
                else
                {
                    final WindowState state = new WindowState(value);

                    if (!this.portletRequest.isWindowStateAllowed(state))
                    {
                        throw new IllegalArgumentException("WindowState '"
                            + state
                            + "' is not allowed for this request.");
                    }

                    this.setRequestedState(state);
                }
            }
            else
            {
                throw new IllegalArgumentException("'"
                    + name
                    + "' is not a valid '"
                    + PARAM_PREFIX
                    + "' prefixed parameter.");
            }
        }
        else
        {
            this.parameters.put(name, value);
        }

        return this;
    }

    /**
     * @see org.displaytag.util.Href#addParameterMap(java.util.Map)
     */
    public void addParameterMap(Map parametersMap)
    {
        for (final Iterator paramItr = parametersMap.entrySet().iterator(); paramItr.hasNext();)
        {
            final Map.Entry entry = (Map.Entry) paramItr.next();

            final String name = (String) entry.getKey();
            final Object value = entry.getValue();

            // Allow multivalued parameters since code elsewhere calls this method to copy
            // parameters from the request to the response. Ensures that developer specified
            // multivalued parameters are retained correctly.
            if (value instanceof String[])
            {
                this.parameters.put(name, value);
            }
            else if (value == null || value instanceof String)
            {
                this.addParameter(name, value);
            }
            else
            {
                this.addParameter(name, value.toString());
            }
        }
    }

    /**
     * @see org.displaytag.util.Href#setParameterMap(java.util.Map)
     */
    public void setParameterMap(Map parametersMap)
    {
        this.parameters.clear();
        this.addParameterMap(parametersMap);
    }

    /**
     * Warning, parameters added to the Map directly will not be parsed by the PortletUrl feature support portions of
     * this class.
     * @see org.displaytag.util.Href#getParameterMap()
     */
    public Map getParameterMap()
    {
        return this.parameters;
    }

    /**
     * @see org.displaytag.util.Href#removeParameter(java.lang.String)
     */
    public void removeParameter(String name)
    {
        this.parameters.remove(name);
    }

    /**
     * @see org.displaytag.util.Href#setAnchor(java.lang.String)
     */
    public void setAnchor(String name)
    {
        this.anchor = name;
    }

    /**
     * @see org.displaytag.util.Href#getAnchor()
     */
    public String getAnchor()
    {
        return this.anchor;
    }

    /**
     * Generates a render or action URL depending on the use of the PortletUrl specific features of this class.
     * @see org.displaytag.util.Href#getBaseUrl()
     */
    public String getBaseUrl()
    {
        if (this.isAction())
        {
            return this.renderResponse.createActionURL().toString();
        }
        else
        {
            return this.renderResponse.createRenderURL().toString();
        }
    }

    /**
     * @see org.displaytag.util.Href#clone()
     */
    public Object clone()
    {
        PortletHref href;

        try
        {
            href = (PortletHref) super.clone();
        }
        catch (CloneNotSupportedException cnse)
        {
            throw new RuntimeException("Parent through a CloneNotSupportedException, this should never happen", cnse);
        }

        href.isAction = this.isAction;
        href.parameters = this.createParameterMap();
        href.parameters.putAll(this.parameters);
        href.requestedMode = this.requestedMode;
        href.requestedState = this.requestedState;
        href.requestedSecure = this.requestedSecure;
        href.anchor = this.anchor;

        return href;
    }

    /**
     * @see org.displaytag.util.Href#equals(java.lang.Object)
     */
    public boolean equals(Object object)
    {
        if (this == object)
        {
            return true;
        }
        if (!(object instanceof PortletHref))
        {
            return false;
        }
        PortletHref rhs = (PortletHref) object;
        return new EqualsBuilder().append(this.isAction, rhs.isAction).append(this.parameters, rhs.parameters).append(
            this.requestedMode,
            rhs.requestedMode).append(this.requestedState, rhs.requestedState).append(
            this.requestedSecure,
            rhs.requestedSecure).append(this.anchor, rhs.anchor).isEquals();
    }

    /**
     * @see org.displaytag.util.Href#hashCode()
     */
    public int hashCode()
    {
        return new HashCodeBuilder(1313733113, -431360889)
            .append(this.isAction)
            .append(this.parameters)
            .append(this.requestedMode)
            .append(this.requestedState)
            .append(this.requestedSecure)
            .append(this.anchor)
            .toHashCode();
    }

    /**
     * @see org.displaytag.util.Href#toString()
     */
    public String toString()
    {
        final PortletURL url;
        if (this.isAction())
        {
            url = this.renderResponse.createActionURL();
        }
        else
        {
            url = this.renderResponse.createRenderURL();
        }

        if (this.isRequestedSecure())
        {
            try
            {
                url.setSecure(true);
            }
            catch (PortletSecurityException pse)
            {
                throw new RuntimeException("Creating secure PortletURL Failed.", pse);
            }
        }

        if (this.getRequestedMode() != null)
        {
            try
            {
                url.setPortletMode(this.getRequestedMode());
            }
            catch (PortletModeException pme)
            {
                final IllegalStateException ise = new IllegalStateException("Requested PortletMode='"
                    + this.getRequestedMode()
                    + "' could not be set.");
                ise.initCause(pme);
                throw ise;
            }
        }

        if (this.getRequestedState() != null)
        {
            try
            {
                url.setWindowState(this.getRequestedState());
            }
            catch (WindowStateException wse)
            {
                final IllegalStateException ise = new IllegalStateException("Requested WindowState='"
                    + this.getRequestedState()
                    + "' could not be set.");
                ise.initCause(wse);
                throw ise;
            }
        }

        for (final Iterator paramItr = this.parameters.entrySet().iterator(); paramItr.hasNext();)
        {
            final Map.Entry entry = (Map.Entry) paramItr.next();

            final String name = (String) entry.getKey();
            final Object value = entry.getValue();

            if (value instanceof String)
            {
                url.setParameter(name, (String) value);
            }
            else if (value instanceof String[])
            {
                url.setParameter(name, (String[]) value);
            }
        }

        if (this.getAnchor() == null)
        {
            return url.toString();
        }
        else
        {
            return url.toString() + "#" + this.getAnchor();
        }
    }

    private Map createParameterMap()
    {
        return PredicatedMap.decorate(new HashMap(), PRED_TYPE_OF_STRING, PRED_OR_STR_STRARR);
    }
}