juneau-core/juneau-marshall-rdf/src/main/java/org/apache/juneau/jena/RdfBeanMeta.java

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package org.apache.juneau.jena;

import org.apache.juneau.*;
import org.apache.juneau.jena.annotation.*;

/**
 * Metadata on beans specific to the RDF serializers and parsers pulled from the {@link Rdf @Rdf} annotation on the
 * class.
 */
public class RdfBeanMeta extends ExtendedBeanMeta {

	// RDF related fields
	private final BeanPropertyMeta beanUriProperty;    // Bean property that identifies the URI of the bean.

	/**
	 * Constructor.
	 *
	 * @param beanMeta The metadata on the bean that this metadata applies to.
	 * @param mp RDF metadata provider (for finding information about other artifacts).
	 */
	public RdfBeanMeta(BeanMeta<?> beanMeta, RdfMetaProvider mp) {
		super(beanMeta);

		BeanPropertyMeta t_beanUriProperty = null;
		for (BeanPropertyMeta p : beanMeta.getPropertyMetas()) {
			RdfBeanPropertyMeta bpm = mp.getRdfBeanPropertyMeta(p);
			if (bpm.isBeanUri())
				t_beanUriProperty = p;
		}

		this.beanUriProperty = t_beanUriProperty;
	}

	/**
	 * Returns <jk>true</jk> if one of the properties on this bean is annotated with {@link Rdf#beanUri() @Rdf(beanUri)} as
	 * <jk>true</jk>
	 *
	 * @return <jk>true</jk> if there is a URI property associated with this bean.
	 */
	public boolean hasBeanUri() {
		return beanUriProperty != null;
	}

	/**
	 * Returns the bean property marked as the URI for the bean (annotated with {@link Rdf#beanUri() @Rdf(beanUri)} as <jk>true</jk>).
	 *
	 * @return The URI property, or <jk>null</jk> if no URI property exists on this bean.
	 */
	public BeanPropertyMeta getBeanUriProperty() {
		return beanUriProperty;
	}
}