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[Openutils-svn] SF.net SVN: openutils:[2413] trunk/openutils-mgnlutils/src/main
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From: <fg...@us...> - 2010-05-12 15:01:42
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Revision: 2413
http://openutils.svn.sourceforge.net/openutils/?rev=2413&view=rev
Author: fgiust
Date: 2010-05-12 15:01:36 +0000 (Wed, 12 May 2010)
Log Message:
-----------
MGNLUTILS-20 New EL functions for building a query string including/excluding a set of parameters
Modified Paths:
--------------
trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlUtilsElFunctions.java
trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld
Modified: trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlUtilsElFunctions.java
===================================================================
--- trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlUtilsElFunctions.java 2010-05-12 15:01:24 UTC (rev 2412)
+++ trunk/openutils-mgnlutils/src/main/java/it/openutils/mgnlutils/el/MgnlUtilsElFunctions.java 2010-05-12 15:01:36 UTC (rev 2413)
@@ -30,6 +30,8 @@
import info.magnolia.link.LinkException;
import info.magnolia.link.LinkUtil;
+import java.io.UnsupportedEncodingException;
+import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Enumeration;
@@ -41,6 +43,7 @@
import javax.jcr.RepositoryException;
import javax.servlet.http.HttpServletRequest;
+import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.jackrabbit.util.ISO9075;
import org.slf4j.Logger;
@@ -657,4 +660,93 @@
{
return content.getChildren(contentType);
}
+
+ /**
+ * Builds a query string with the actual request parameters, optionally excluding a list of parameters.
+ * @param excludedParamsWhitespaceSeparated list of parameters to exclude, in a single whitespace separated string
+ * @return queryString, without the leading "?" and with parameters already urlencoded (but with ampersands not html
+ * escaped)
+ */
+ public static String buildQuerystringExcluding(String excludedParamsWhitespaceSeparated)
+ {
+ return buildQuerystringInternal(StringUtils.split(
+ StringUtils.defaultString(excludedParamsWhitespaceSeparated),
+ ' '), new String[0]);
+ }
+
+ /**
+ * Builds a query string with the actual request parameters, optionally excluding a list of parameters
+ * @param includedParamsWhitespaceSeparated list of parameters to include, in a single whitespace separated string
+ * @return queryString, without the leading "?" and with parameters already urlencoded (but with ampersands not html
+ * escaped)
+ */
+ public static String buildQuerystringIncluding(String includedParamsWhitespaceSeparated)
+ {
+ return buildQuerystringInternal(new String[0], StringUtils.split(StringUtils
+ .defaultString(includedParamsWhitespaceSeparated), ' '));
+ }
+
+ /**
+ * @param excluded
+ * @return
+ */
+ private static String buildQuerystringInternal(String[] excluded, String[] included)
+ {
+ Map<String, String> parameters = MgnlContext.getParameters();
+ StringBuffer sb = new StringBuffer();
+
+ boolean first = true;
+
+ for (Map.Entry<String, String> entry : parameters.entrySet())
+ {
+ String key = entry.getKey();
+ if (!ArrayUtils.contains(excluded, key)
+ && (included == null || included.length == 0 || ArrayUtils.contains(included, key)))
+ {
+ if (!first)
+ {
+ sb.append("&");
+ }
+
+ String[] parameterValues = MgnlContext.getParameterValues(key);
+
+ if (parameterValues != null)
+ {
+ for (int j = 0; j < parameterValues.length; j++)
+ {
+ String value = parameterValues[j];
+ sb.append(urlencode(key));
+ sb.append("=");
+ sb.append(urlencode(value));
+ if (j + 1 < parameterValues.length)
+ {
+ sb.append("&");
+ }
+ }
+ }
+
+ first = false;
+ }
+ }
+
+ return sb.toString();
+ }
+
+ /**
+ * Encodes a url in UTF-8 format
+ * @param string url to be encoded
+ * @return a url UTF-8 encoded
+ */
+ private static String urlencode(String string)
+ {
+ try
+ {
+ return URLEncoder.encode(string, "UTF-8");
+ }
+ catch (UnsupportedEncodingException e)
+ {
+ // should never happen
+ return string;
+ }
+ }
}
Modified: trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld
===================================================================
--- trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld 2010-05-12 15:01:24 UTC (rev 2412)
+++ trunk/openutils-mgnlutils/src/main/resources/META-INF/tld/mgnlutils.tld 2010-05-12 15:01:36 UTC (rev 2413)
@@ -273,4 +273,18 @@
</ul>
]]></example>
</function>
+ <function>
+ <name>buildQuerystringExcluding</name>
+ <description>Builds a query string with the actual request parameters, optionally excluding a list of parameters. The list list of parameters to exclude in given as a single whitespace separated string.
+ The returned querystring doesn't contain the leading "?" and has all the parameters already urlencoded (but with ampersands not html escaped)</description>
+ <function-class>it.openutils.mgnlutils.el.MgnlUtilsElFunctions</function-class>
+ <function-signature>java.util.String buildQuerystringExcluding(java.lang.String)</function-signature>
+ </function>
+ <function>
+ <name>buildQuerystringIncluding</name>
+ <description>Builds a query string with the actual request parameters, only including the given list of parameters. The list list of parameters to include in given as a single whitespace separated string.
+ The returned querystring doesn't contain the leading "?" and has all the parameters already urlencoded (but with ampersands not html escaped)</description>
+ <function-class>it.openutils.mgnlutils.el.MgnlUtilsElFunctions</function-class>
+ <function-signature>java.util.String buildQuerystringIncluding(java.lang.String)</function-signature>
+ </function>
</taglib>
\ No newline at end of file
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