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package org.glassfish.jersey.moxy.xml;

import java.util.Collections;
import java.util.Map;

import javax.ws.rs.core.Feature;
import javax.ws.rs.core.FeatureContext;

/**
 * Feature used to register MOXy XML providers.
 *
 * @author Pavel Bucek (pavel.bucek at oracle.com)
 */
public class MoxyXmlFeature implements Feature {

    private final Map properties;
    private final ClassLoader classLoader;
    private final boolean oxmMappingLookup;
    private final Class[] classes;

    /**
     * Default constructor creates standard {@link org.eclipse.persistence.jaxb.JAXBContext} without any activated features
     * and properties. Current context {@link ClassLoader} will be used.
     */
    public MoxyXmlFeature() {
        this(Collections.emptyMap(), Thread.currentThread().getContextClassLoader(), false);
    }

    /**
     * Constructor which allows MOXy {@link org.eclipse.persistence.jaxb.JAXBContext} customization.
     *
     * @param classes additional classes used for creating {@link org.eclipse.persistence.jaxb.JAXBContext}.
     */
    public MoxyXmlFeature(Class... classes) {
        this(Collections.emptyMap(), Thread.currentThread().getContextClassLoader(), false, classes);
    }

    /**
     * Constructor which allows MOXy {@link org.eclipse.persistence.jaxb.JAXBContext} customization.
     *
     * @param properties       properties to be passed to
     *                         {@link org.eclipse.persistence.jaxb.JAXBContextFactory#createContext(Class[], java.util.Map,
     *                         ClassLoader)}. May be {@code null}.
     * @param classLoader      will be used to load classes. If {@code null}, current context {@link ClassLoader} will be used.
     * @param oxmMappingLookup if {@code true}, lookup for file with custom mappings will be performed.
     * @param classes          additional classes used for creating {@link org.eclipse.persistence.jaxb.JAXBContext}.
     */
    public MoxyXmlFeature(Map properties, ClassLoader classLoader, boolean oxmMappingLookup, Class... classes) {
        this.properties = (properties == null ? Collections.emptyMap() : properties);
        this.classLoader = (classLoader == null ? Thread.currentThread().getContextClassLoader() : classLoader);
        this.oxmMappingLookup = oxmMappingLookup;
        this.classes = classes;
    }

    @Override
    public boolean configure(FeatureContext context) {
        context.register(new MoxyContextResolver(properties, classLoader, oxmMappingLookup, classes));
        return true;
    }
}