metacat/src/edu/ucsb/nceas/metacat/dataone/SystemMetadataManager.java @ 5893
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/**
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*
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*/
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package edu.ucsb.nceas.metacat.dataone; |
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import edu.ucsb.nceas.metacat.IdentifierManager; |
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import edu.ucsb.nceas.metacat.McdbDocNotFoundException; |
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/**
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* @author berkley
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*
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* Class to handle SystemMetadata object in the metacat system
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*/
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public class SystemMetadataManager |
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{
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//singleton instance
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private static SystemMetadataManager manager = null; |
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private IdentifierManager idManager = null; |
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/**
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* private constructor. Use the singleton getInstance() method to use
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* this class
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*/
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private SystemMetadataManager() |
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{
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idManager = IdentifierManager.getInstance(); |
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}
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/**
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* get a singleton instance of this class
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*/
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public static SystemMetadataManager getInstance() |
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{
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if(manager == null) |
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{
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manager = new SystemMetadataManager(); |
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}
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return manager; |
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}
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/**
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* return true if the document represented by guid has a system metadata
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* document registered in the systemmetadata table
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* @param guid
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* @return
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*/
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public boolean documentHasSystemMetadata(String guid) |
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{
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boolean hassm = false; |
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try
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{
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String smid = idManager.getSystemMetadataLocalId(guid); |
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if(smid != null && !smid.trim().equals("")) |
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{
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hassm = true; |
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}
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}
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catch(McdbDocNotFoundException me) |
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{
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//if this exception is thrown, the doc with guid does not have
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//sys metadata
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}
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return hassm; |
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}
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}
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