edu.mayo.cts2.framework.plugin.service.lexevs.uri.DelegatingUriHandler.java Source code

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Here is the source code for edu.mayo.cts2.framework.plugin.service.lexevs.uri.DelegatingUriHandler.java

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/*
* Copyright: (c) Mayo Foundation for Medical Education and
* Research (MFMER). All rights reserved. MAYO, MAYO CLINIC, and the
* triple-shield Mayo logo are trademarks and service marks of MFMER.
*
* Distributed under the OSI-approved BSD 3-Clause License.
* See http://ncip.github.com/lexevs-service/LICENSE.txt for details.
*/
package edu.mayo.cts2.framework.plugin.service.lexevs.uri;

import java.util.Collections;
import java.util.List;

import org.LexGrid.LexBIG.DataModel.Core.CodingSchemeSummary;
import org.LexGrid.LexBIG.DataModel.Core.ResolvedCodedNodeReference;
import org.LexGrid.codingSchemes.CodingScheme;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Primary;
import org.springframework.core.OrderComparator;
import org.springframework.stereotype.Component;

/**
 * The Class DelegatingUriHandler.
 *
 * @author <a href="mailto:kevin.peterson@mayo.edu">Kevin Peterson</a>
 */
@Component
@Primary
public class DelegatingUriHandler implements UriHandler, InitializingBean {

    private List<DelegateUriHandler> delegateUriHandlers;

    /* (non-Javadoc)
     * @see org.springframework.beans.factory.InitializingBean#afterPropertiesSet()
     */
    @Override
    public void afterPropertiesSet() throws Exception {
        Collections.sort(this.delegateUriHandlers, OrderComparator.INSTANCE);
    }

    /* (non-Javadoc)
     * @see edu.mayo.cts2.framework.plugin.service.lexevs.uri.UriHandler#getEntityUri(org.LexGrid.LexBIG.DataModel.Core.ResolvedCodedNodeReference)
     */
    @Override
    public String getEntityUri(final ResolvedCodedNodeReference reference) {
        return this.doIn(new DoInDelegates() {
            @Override
            public String f(UriHandler uriHandler) {
                return uriHandler.getEntityUri(reference);
            }
        });
    }

    /* (non-Javadoc)
     * @see edu.mayo.cts2.framework.plugin.service.lexevs.uri.UriHandler#getCodeSystemUri(org.LexGrid.codingSchemes.CodingScheme)
     */
    @Override
    public String getCodeSystemUri(final CodingScheme codingScheme) {
        return this.doIn(new DoInDelegates() {
            @Override
            public String f(UriHandler uriHandler) {
                return uriHandler.getCodeSystemUri(codingScheme);
            }
        });
    }

    @Override
    public String getCodeSystemUri(final CodingSchemeSummary codingScheme) {
        return this.doIn(new DoInDelegates() {
            @Override
            public String f(UriHandler uriHandler) {
                return uriHandler.getCodeSystemUri(codingScheme);
            }
        });
    }

    /* (non-Javadoc)
     * @see edu.mayo.cts2.framework.plugin.service.lexevs.uri.UriHandler#getCodeSystemVersionUri(org.LexGrid.codingSchemes.CodingScheme)
     */
    @Override
    public String getCodeSystemVersionUri(final CodingScheme codingScheme) {
        return this.doIn(new DoInDelegates() {
            @Override
            public String f(UriHandler uriHandler) {
                return uriHandler.getCodeSystemVersionUri(codingScheme);
            }
        });
    }

    @Override
    public String getCodeSystemVersionUri(final CodingSchemeSummary codingSchemeSummary) {
        return this.doIn(new DoInDelegates() {
            @Override
            public String f(UriHandler uriHandler) {
                return uriHandler.getCodeSystemVersionUri(codingSchemeSummary);
            }
        });
    }

    @Override
    public String getPredicateUri(final String codingSchemeUri, final String codingSchemeVersion,
            final String associationName) {
        return this.doIn(new DoInDelegates() {
            @Override
            public String f(UriHandler uriHandler) {
                return uriHandler.getPredicateUri(codingSchemeUri, codingSchemeVersion, associationName);
            }
        });
    }

    private interface DoInDelegates {
        public String f(UriHandler uriHandler);
    }

    protected String doIn(DoInDelegates doIn) {
        for (UriHandler handler : this.delegateUriHandlers) {
            String uri = doIn.f(handler);
            if (StringUtils.isNotBlank(uri)) {
                return uri;
            }
        }

        throw new IllegalStateException("Uri not found - please implement a Fallback Handler.");
    }

    public List<DelegateUriHandler> getDelegateUriHandlers() {
        return delegateUriHandlers;
    }

    @Autowired
    public void setDelegateUriHandlers(List<DelegateUriHandler> delegateUriHandlers) {
        this.delegateUriHandlers = delegateUriHandlers;
    }

}