org.dkpro.lab.engine.impl.ImportUtil.java Source code

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Here is the source code for org.dkpro.lab.engine.impl.ImportUtil.java

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/*******************************************************************************
 * Copyright 2011
 * Ubiquitous Knowledge Processing (UKP) Lab
 * Technische Universitt Darmstadt
 *   
 * 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 org.dkpro.lab.engine.impl;

import java.net.URI;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.regex.Pattern;

import javax.ws.rs.core.MultivaluedMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.dkpro.lab.resteasy.UriInfoImpl;
import org.dkpro.lab.storage.TaskContextNotFoundException;

public class ImportUtil {
    private static final Log log = LogFactory.getLog(ImportUtil.class);

    public static boolean matchConstraints(Map<String, String> aDiscriminators, Map<String, String> aConstraints,
            boolean aStrict) {
        nextconstraint: for (Entry<String, String> e : aConstraints.entrySet()) {
            String keyPattern = e.getKey();
            String valuePattern = "^" + e.getValue() + "$";

            // If a property is not specified with a full class name, then we only use the
            // simple property name for matching
            if (!keyPattern.contains(Pattern.quote("|"))) {
                keyPattern = ".*" + Pattern.quote("|") + keyPattern;
            }
            keyPattern = "^" + keyPattern + "$";

            Set<String> keys = aDiscriminators.keySet();
            nextKey: for (String key : keys) {
                // Pattern matching must remain active here!!
                if (!(e.getKey().equals(key) || Pattern.matches(keyPattern, key))) {
                    // key pattern does not match or equal the key. Try next key
                    log.trace("No key match: [" + keyPattern + "] [" + key + "]");
                    continue nextKey;
                }

                String val = aDiscriminators.get(key);
                // Issue 12 - Bug when using maps or empty arrays as parameters
                //            Pattern matching disabled.
                if (!(e.getValue().equals(val) /* || Pattern.matches(valuePattern, val)*/ )) {
                    // value pattern does not match or equal the property value, this is
                    // not the context we look for
                    log.debug("No value match: [" + key + "] [" + valuePattern + "] [" + val + "]");
                    return false;
                } else {
                    // Ok, this key matched, so we can continue with the next constraint
                    log.trace("Match: [" + key + "] [" + val + "]");
                    continue nextconstraint;
                }
            }

            // If we get here no key has matched the constraint, thus this is not the
            // context we look for
            if (aStrict) {
                log.debug("Missing key: [" + keyPattern + "]");
                return false;
            }
        }
        return true;
    }

    public static Map<String, String> extractConstraints(URI aUri) {
        @SuppressWarnings("unchecked")
        UriInfoImpl uriInfo = new UriInfoImpl(aUri, null, "", aUri.getRawQuery(), Collections.EMPTY_LIST);

        MultivaluedMap<String, String> parameters = uriInfo.getQueryParameters(true);
        Map<String, String> constraints = new HashMap<String, String>();
        for (String key : parameters.keySet()) {
            for (String value : parameters.get(key)) {
                constraints.put(key, value);
            }
        }

        return constraints;
    }

    public static TaskContextNotFoundException createContextNotFoundException(String aTaskType,
            Map<String, String> aConstraints) {
        if (aTaskType == null) {
            throw new IllegalArgumentException("Task type cannot be null");
        }

        StringBuilder sb = new StringBuilder();
        sb.append("Task [" + aTaskType + "] has never been executed.");
        if (aConstraints.size() > 0) {
            sb.append(" There are additional constraints:\n");
            for (Entry<String, String> e : aConstraints.entrySet()) {
                sb.append("[");
                sb.append(e.getKey());
                sb.append("] = [");
                sb.append(e.getValue());
                sb.append("]\n");
            }
        }
        return new TaskContextNotFoundException(sb.toString());
    }
}