com.evolveum.midpoint.model.common.expression.functions.BasicExpressionFunctionsXPath.java Source code

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Here is the source code for com.evolveum.midpoint.model.common.expression.functions.BasicExpressionFunctionsXPath.java

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/*
 * Copyright (c) 2010-2013 Evolveum
 *
 * Licensed 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 com.evolveum.midpoint.model.common.expression.functions;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;

import javax.naming.InvalidNameException;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.ldap.LdapName;
import javax.naming.ldap.Rdn;

import org.apache.commons.lang.StringUtils;
import org.w3c.dom.Element;

import com.evolveum.midpoint.prism.PrismContext;
import com.evolveum.midpoint.prism.PrismProperty;
import com.evolveum.midpoint.prism.polystring.PolyString;
import com.evolveum.midpoint.schema.util.ShadowUtil;
import com.evolveum.midpoint.util.logging.Trace;
import com.evolveum.midpoint.util.logging.TraceManager;
import com.evolveum.midpoint.xml.ns._public.common.common_3.ShadowType;

/**
 * Library of standard midPoint functions. These functions are made available to all
 * midPoint expressions.
 * 
 * @author Radovan Semancik
 *
 */
public class BasicExpressionFunctionsXPath {

    public static final Trace LOGGER = TraceManager.getTrace(BasicExpressionFunctionsXPath.class);

    private BasicExpressionFunctions functions;

    public BasicExpressionFunctionsXPath(BasicExpressionFunctions functions) {
        super();
        this.functions = functions;
    }

    /**
     * Convert string to lower case.
     */
    public static String lc(String orig) {
        return BasicExpressionFunctions.lc(orig);
    }

    /**
     * Convert string to upper case.
     */
    public static String uc(String orig) {
        return BasicExpressionFunctions.uc(orig);
    }

    /**
     * Remove whitespaces at the beginning and at the end of the string.
     */
    public static String trim(String orig) {
        return BasicExpressionFunctions.trim(orig);
    }

    /**
     * Concatenates the arguments to create a name.
     * Each argument is trimmed and the result is concatenated by spaces.
     */
    public String concatName(String... components) {
        return functions.concatName(components);
    }

    /**
     * Normalize a string value. It follows the default normalization algorithm
     * used for PolyString values.
     * 
     * @param orig original value to normalize
     * @return normalized value
     */
    public String norm(String orig) {
        return functions.norm(orig);
    }

    public String stringify(Object whatever) {
        return functions.stringify(whatever);
    }

    public String determineLdapSingleAttributeValue(Element dn, String attributeName, Element valueElement)
            throws NamingException {
        // Trivial case: the value is a single element therefore it has a single value.
        return valueElement.getTextContent();
    }

    public String determineLdapSingleAttributeValue(Collection<String> dns, String attributeName,
            Element valueElement) throws NamingException {
        // Trivial case: the value is a single element therefore it has a single value.
        return valueElement.getTextContent();
    }

    public String determineLdapSingleAttributeValue(Element dnElement, String attributeName,
            Collection<String> values) throws NamingException {
        if (values == null || values.isEmpty()) {
            // Shortcut. This is maybe the most common case. We want to return quickly and we also need to avoid more checks later.
            return null;
        }
        if (dnElement == null) {
            throw new IllegalArgumentException("No dn argument specified");
        }
        return functions.determineLdapSingleAttributeValue(dnElement.getTextContent(), attributeName, values);
    }

    public String determineLdapSingleAttributeValue(Collection<String> dns, String attributeName,
            Collection<String> values) throws NamingException {
        return functions.determineLdapSingleAttributeValue(dns, attributeName, values);
    }

}