metadataid.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.common.metadata;

/**
 * Barebones implementation of {@link IMetadataID}
 */
public class MetadataID implements IMetadataID {

	/**
	 * {@link IMetadataCatalog} representing the catalog from which the metadata was retrieved.
	 */
	private IMetadataCatalog _metadataCatalog = null;
	/**
	 * {@link IMetadataDocument} representing the metadata document.
	 */
	private IMetadataDocument _metadataDocument = null;
	/**
	 * {@link String} containing the ID for this document.
	 */
	private String _id = null;

	/**
	 * Default constructor; does nothing other than instantiate the object
	 */
	public MetadataID() {
	}

	/**
	 * Sets a reference to the metadata catalog from which the document that this {@code MetadataID} refers to was retrieved.
	 * @param catalog The {@link IMetadataCatalog}; cannot be {@code null}.
	 */
	public void setCatalog(IMetadataCatalog catalog) {
		if(catalog == null) {
			throw new NullPointerException("catalog cannot be null");
		}
		_metadataCatalog = catalog;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see com.esri.solutions.jitk.common.metadata.IMetadataID#getCatalog()
	 */
	public IMetadataCatalog getCatalog() {
		return _metadataCatalog;
	}

	/**
	 * Sets a reference to the document to which this {@code MetadataID} refers.
	 * @param document The {@link IMetadataDocument}; cannot be {@code null}.
	 */
	public void setDocument(IMetadataDocument document) {
		if(document == null) {
			throw new NullPointerException("document cannot be null");
		}
		_metadataDocument = document;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see com.esri.solutions.jitk.common.metadata.IMetadataID#getDocument()
	 */
	public IMetadataDocument getDocument() {
		return _metadataDocument;
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see com.esri.solutions.jitk.common.metadata.IMetadataID#getId()
	 */
	public String getId() {
		return _id;
	}

	/**
	 * @param id {@link String} containing the ID to set; cannot be {@code null}.
	 */
	public void setId(String id) {
		if(id == null) {
			throw new NullPointerException("id cannot be null");
		}
		_id = id;
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	@Override
	public boolean equals(Object another) {
		if(another == null) {
			return false;
		}
		if(!(another instanceof IMetadataID)) {
			return false;
		}
		if(another==this) {
			return true;
		}
		IMetadataID anotherID = (IMetadataID)another;
		boolean isEqual = this.getId() == anotherID.getId();
		return isEqual;
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#hashCode()
	 */
	@Override
	public int hashCode() {
		return super.hashCode();
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		StringBuffer sb = new StringBuffer();
		sb.append("MetadataID: ");
		sb.append("ID: ");
		sb.append(_id);
		sb.append("Catalog: ");
		sb.append(_metadataCatalog);
		sb.append("Document: ");
		sb.append(_metadataDocument);
		String value = sb.toString();
		return value;
	}
	
	

}