ca.uhn.fhir.model.primitive.UriDt.java Source code

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Here is the source code for ca.uhn.fhir.model.primitive.UriDt.java

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package ca.uhn.fhir.model.primitive;

/*
 * #%L
 * HAPI FHIR - Core Library
 * %%
 * Copyright (C) 2014 - 2016 University Health Network
 * %%
 * 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.
 * #L%
 */

import java.net.URI;
import java.net.URISyntaxException;

import org.apache.commons.lang3.StringUtils;

import ca.uhn.fhir.model.api.BasePrimitive;
import ca.uhn.fhir.model.api.annotation.DatatypeDef;
import ca.uhn.fhir.model.api.annotation.SimpleSetter;

@DatatypeDef(name = "uri")
public class UriDt extends BasePrimitive<String> {

    private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(UriDt.class);

    /**
     * Create a new String
     */
    public UriDt() {
        // nothing
    }

    /**
     * Create a new String
     */
    @SimpleSetter
    public UriDt(@SimpleSetter.Parameter(name = "theUri") String theValue) {
        setValueAsString(theValue);
    }

    @Override
    protected String encode(String theValue) {
        return theValue;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;

        UriDt other = (UriDt) obj;
        if (getValue() == null && other.getValue() == null) {
            return true;
        }
        if (getValue() == null || other.getValue() == null) {
            return false;
        }

        String normalize = normalize(getValue());
        String normalize2 = normalize(other.getValue());
        return normalize.equals(normalize2);
    }

    /**
     * Compares the given string to the string representation of this URI. In many cases it is preferable to use this
     * instead of the standard {@link #equals(Object)} method, since that method returns <code>false</code> unless it is
     * passed an instance of {@link UriDt}
     */
    public boolean equals(String theString) {
        return StringUtils.equals(getValueAsString(), theString);
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;

        String normalize = normalize(getValue());
        result = prime * result + ((normalize == null) ? 0 : normalize.hashCode());

        return result;
    }

    private String normalize(String theValue) {
        if (theValue == null) {
            return null;
        }
        URI retVal;
        try {
            retVal = new URI(theValue).normalize();
            String urlString = retVal.toString();
            if (urlString.endsWith("/") && urlString.length() > 1) {
                retVal = new URI(urlString.substring(0, urlString.length() - 1));
            }
        } catch (URISyntaxException e) {
            ourLog.debug("Failed to normalize URL '{}', message was: {}", theValue, e.toString());
            return theValue;
        }

        return retVal.toASCIIString();
    }

    @Override
    protected String parse(String theValue) {
        return theValue;
    }

    /**
     * Creates a new UriDt instance which uses the given OID as the content (and prepends "urn:oid:" to the OID string
     * in the value of the newly created UriDt, per the FHIR specification).
     * 
     * @param theOid
     *           The OID to use (<code>null</code> is acceptable and will result in a UriDt instance with a
     *           <code>null</code> value)
     * @return A new UriDt instance
     */
    public static UriDt fromOid(String theOid) {
        if (theOid == null) {
            return new UriDt();
        }
        return new UriDt("urn:oid:" + theOid);
    }

}