NuxeoListUtils.java

package org.easysoa.registry.utils;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import org.easysoa.registry.types.ids.SoaNodeId;
import org.nuxeo.ecm.core.api.ClientException;
import org.nuxeo.ecm.core.api.CoreSession;
import org.nuxeo.ecm.core.api.DocumentModel;
import org.nuxeo.ecm.core.api.DocumentModelList;
import org.nuxeo.ecm.core.api.DocumentRef;
import org.nuxeo.ecm.core.api.IdRef;

public class NuxeoListUtils {
    
    /** to help List.toArray() */
    public static final String[] EMPTY_STRING_ARRAY = new String[0];

    public static final DocumentModelList EMPTY_DOCUMENT_MODEL_LIST = EmptyDocumentModelList.INSTANCE;

    public static final List<SoaNodeId> EMPTY_SOANODEID_LIST = new ArrayList<SoaNodeId>(0);
    
    
    public static ArrayList<DocumentModel> list(DocumentModel...objs) {
        ArrayList<DocumentModel> list = new ArrayList<DocumentModel>(objs.length);
        for (DocumentModel obj : objs) {
            list.add(obj);
        }
        return list;
    }
    
    public static String toCsv(Collection<String> values) throws ClientException {
        if (values == null || values.isEmpty()) {
            return "";
        }
        Iterator<String> valuesIt = values.iterator();
        StringBuffer valuesSbuf = new StringBuffer("'"); // NB. '\'' doesn't work, counts as int !!
        valuesSbuf.append(valuesIt.next());
        valuesSbuf.append('\'');
        while (valuesIt.hasNext()) {
            valuesSbuf.append(", '");
            valuesSbuf.append(valuesIt.next());
            valuesSbuf.append('\'');
        }
        return valuesSbuf.toString();
    }
    
    public static String toLiteral(Collection<String> values) throws ClientException {
        return '(' + toCsv(values) + ')';
    }

    /**
     * Does not use an intermediary set
     * @param session
     * @param proxies
     * @return
     * @throws ClientException
     */
    public static String getProxiedIdLiteralList(CoreSession session, List<DocumentModel> proxies) throws ClientException {
        return toLiteral(getProxiedIds(session, proxies));
    }

    public static ArrayList<String> getProxiedIds(CoreSession session, List<DocumentModel> proxies) throws ClientException {
        ArrayList<String> proxiedIds = new ArrayList<String>();
        for (DocumentModel proxy : proxies) {
            proxiedIds.add(session.getSourceDocument(proxy.getRef()).getId());
        }
        return proxiedIds;
    }

    public static ArrayList<String> getProxyIds(CoreSession session, List<DocumentModel> docs, DocumentRef root) throws ClientException {
        ArrayList<String> proxyIds = new ArrayList<String>();
        for (DocumentModel doc : docs) {
            for (DocumentModel proxy : session.getProxies(doc.getRef(), root)) {
                proxyIds.add(proxy.getId());
            }
        }
        return proxyIds;
    }

    public static ArrayList<String> getProxyIds(CoreSession session, Collection<String> docIds, DocumentRef root) throws ClientException {
        ArrayList<String> proxyIds = new ArrayList<String>();
        for (String docId : docIds) {
            for (DocumentModel proxy : session.getProxies(new IdRef(docId), root)) {
                proxyIds.add(proxy.getId());
            }
        }
        return proxyIds;
    }
    
    public static ArrayList<String> getParentIds(List<DocumentModel> docs) throws ClientException {
        ArrayList<String> parentIds = new ArrayList<String>();
        for (DocumentModel doc : docs) {
            parentIds.add(doc.getParentRef().reference().toString());
        }
        return parentIds;
    }
    
    public static ArrayList<String> getIds(List<DocumentModel> docModels) throws ClientException {
        ArrayList<String> ids = new ArrayList<String>(docModels.size());
        for (DocumentModel doc : docModels) {
            ids.add(doc.getId());
        }
        return ids;
    }
    
}