Example usage for javax.naming Context lookup

Introduction

In this page you can find the example usage for javax.naming Context lookup.

Prototype

public Object lookup(String name) throws NamingException;

Source Link

Document

Retrieves the named object.

Usage

From source file:de.sqlcoach.db.jdbc.DBConnection.java

/**
 * Gets the pool connection./*from  www  . java2  s .  c o  m*/
 * 
 * @return the pool connection
 * 
 * @throws NamingException
 *           the naming exception
 * @throws SQLException
 *           the SQL exception
 */
protected static DBConnection getPoolConnection(String dataSourceName) throws NamingException, SQLException {
    final Context initCtx = new InitialContext();
    final Context envCtx = (Context) initCtx.lookup("java:comp/env");

    final String name = "jdbc/" + dataSourceName;

    DBConnection dbconn = null;

    Integer connectionCnt = DBConnection.connectionCounter.get(dataSourceName);
    if (connectionCnt == null)
        connectionCnt = 0;

    if (log.isInfoEnabled()) {
        log.info("getPoolConnection ENTER [dataSource=" + dataSourceName + " connectionCnt=" + connectionCnt
                + "]");
    }

    // final DataSource ds = (DataSource)envCtx.lookup(name);
    // if (ds == null) {
    // log.error ("getPoolConnection : No DataSource for "+ name+ " !");
    // return null;
    // } else {
    // if (log.isDebugEnabled())
    // log.debug("getPoolConnection : DataSource: "+ds.toString());
    // }

    // final Connection cn = ds.getConnection();
    final Connection cn = getSimpleConnection(dataSourceName);
    if (cn == null) { // Failed !
        log.error("getPoolConnection : No Connection for " + name + " ! (connectionCnt:" + connectionCnt + ")");
        return null;
    } else { // Success
        DBConnection.connectionCounter.put(dataSourceName, connectionCnt++);
        dbconn = new DBConnection(cn, connectionCnt, dataSourceName);
        if (log.isDebugEnabled())
            log.debug("getPoolConnection : Connection: " + cn.toString());
    }

    cn.setAutoCommit(false);

    // Set Oracle date format to YYYY-MM-DD
    // final java.sql.DatabaseMetaData dm = cn.getMetaData();
    // final String prodname = dm.getDatabaseProductName();
    // if (prodname.equalsIgnoreCase("Oracle")) { // Only for Oracle !!
    // try (Statement s = cn.createStatement()) {
    // s.execute("ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD'");
    // if (log.isDebugEnabled())
    // log.debug("getPoolConnection : ProductName=" + prodname + "\nALTER
    // SESSION SET NLS_DATE_FORMAT = 'YYYY-MM-DD'");
    // } catch (SQLException e) {
    // log.warn("getPoolConnection : ProductName="+prodname+"\nALTER SESSION SET
    // NLS_DATE_FORMAT = 'YYYY-MM-DD': ", e);
    // }
    // } else {
    // if (log.isDebugEnabled())
    // log.debug("getPoolConnection : Kein Oracle cn= "+cn+ "
    // ProductName="+prodname);
    // }

    if (log.isInfoEnabled())
        log.info("getPoolConnection LEAVE dbconn=" + dbconn);

    return dbconn;
}

---

From source file:com.wso2telco.util.DbUtil.java

private static void initializeDatasources() throws AuthenticatorException {
    if (mConnectDatasource != null) {
        return;//from   w  ww .  j  a  va 2s . c o m
    }

    String dataSourceName = null;
    try {
        Context ctx = new InitialContext();
        dataSourceName = configurationService.getDataHolder().getMobileConnectConfig().getDataSourceName();
        mConnectDatasource = (DataSource) ctx.lookup(dataSourceName);
    } catch (NamingException e) {
        handleException("Error while looking up the data source: " + dataSourceName, e);
    }
}

---

From source file:org.bibsonomy.lucene.util.LuceneBase.java

/**
 * get runtime configuration from context
 *///from ww w.j av  a  2 s  .  c om
public static void initRuntimeConfiguration() {
    try {
        final Context initContext = new InitialContext();
        final Context envContext = (Context) initContext.lookup(CONTEXT_ENV_NAME);
        final LuceneConfig config = (LuceneConfig) envContext.lookup(CONTEXT_CONFIG_BEAN);

        // index base path
        setIndexBasePath(config.getIndexPath());
        // search mode
        if (present(config.getSearchMode())) {
            searchMode = config.getSearchMode();
        }

        // db driver name
        if (present(config.getDbDriverName())) {
            dbDriverName = config.getDbDriverName();
        }

        // maximum field length in the lucene index
        if (present(config.getMaximumFieldLength())) {
            String mflIn = config.getMaximumFieldLength();
            if (KEY_UNLIMITED.equals(mflIn)) {
                maximumFieldLength = IndexWriter.MaxFieldLength.UNLIMITED;
            } else if (KEY_LIMITED.equals(mflIn)) {
                maximumFieldLength = IndexWriter.MaxFieldLength.LIMITED;
            } else {
                Integer value;
                try {
                    value = Integer.parseInt(mflIn);
                } catch (NumberFormatException e) {
                    value = IndexWriter.DEFAULT_MAX_FIELD_LENGTH;
                }
                maximumFieldLength = new IndexWriter.MaxFieldLength(value);
            }
        }

        // nr. of redundant indeces
        if (present(config.getRedundantCnt())) {
            Integer value;
            try {
                value = Integer.parseInt(config.getRedundantCnt());
            } catch (NumberFormatException e) {
                value = IndexWriter.DEFAULT_MAX_FIELD_LENGTH;
            }
            redundantCnt = value;
        }

        // enable/disable tag cloud on search pages
        setEnableTagClouds(Boolean.valueOf(config.getEnableTagClouds()));

        // limit number of posts to consider for building the tag cloud
        setTagCloudLimit(Integer.valueOf(config.getTagCloudLimit()));

        setEnableUpdater(Boolean.valueOf(config.getEnableUpdater()));
        loadIndexIntoRam = Boolean.valueOf(config.getLoadIndexIntoRam());
    } catch (Exception e) {
        log.error("Error requesting JNDI environment variables", e);
    }

    // done - print out debug information
    log.debug("\t indexBasePath    : " + getIndexBasePath());
    log.debug("\t searchMode       : " + searchMode);
    log.debug("\t enableUpdater    : " + getEnableUpdater());
    log.debug("\t loadIndexIntoRam : " + loadIndexIntoRam);
}

---

From source file:com.wso2telco.refund.utils.DbUtils.java

/**
 * Initialize datasources.//from ww w.j a  v  a2s .  c o  m
 *
 * @throws SQLException the SQL exception
 * @throws DBUtilException the axata db util exception
 */
public static void initializeDatasources() throws SQLException, DBUtilException {
    if (Datasource != null) {
        return;
    }

    try {
        Context ctx = new InitialContext();
        Datasource = (DataSource) ctx.lookup(DATA_SOURCE);
    } catch (NamingException e) {
        handleException("Error while looking up the data source: " + DATA_SOURCE, e);
    }
}

---

From source file:de.zib.gndms.infra.GridConfig.java

/**
 * @see #findSharedContext(javax.naming.Context, String)
 *//*from   www .j  a va 2  s.c o m*/
@NotNull
public static Context findSharedContext(@NotNull Context startContext, @NotNull Name name)
        throws NamingException {
    Context resultContext;

    try {
        resultContext = startContext.createSubcontext(name);
    } catch (NameAlreadyBoundException e) {
        resultContext = (Context) startContext.lookup(name);
    }
    return resultContext;
}

---

From source file:de.zib.gndms.infra.GridConfig.java

/**
 * Returns the {@code Subcontext} of {@code startContext}, which is bounded to {@code name}.
 * If it does not exist, a new subcontext is created and bounded to {@code name}.
 *
 * @param startContext a Context, which is supposed to have a certain subContext
 * @param name the name of a subcontext of {@code startContext}
 * @return a chosen subcontext of {@code startContext}
 * @throws NamingException if a naming exception occurs, while executing {@code createSubcontext()} or {@code lookup()}
 *//*from   w w  w . j  av a 2 s  . c  o m*/
@NotNull
public static Context findSharedContext(@NotNull Context startContext, @NotNull String name)
        throws NamingException {
    Context resultContext;

    try {
        resultContext = startContext.createSubcontext(name);
    } catch (NameAlreadyBoundException e) {
        resultContext = (Context) startContext.lookup(name);
    }
    return resultContext;
}

---

From source file:com.silverpeas.components.model.AbstractSpringJndiDaoTest.java

/**
 * Workaround to be able to use Sun's JNDI file system provider on Unix
 *
 * @param ic : the JNDI initial context/*  ww  w  .ja  v a 2  s . c o  m*/
 * @param jndiName : the binding name
 * @param ref : the reference to be bound
 * @throws NamingException
 */
protected static void rebind(InitialContext ic, String jndiName, Object ref) throws NamingException {
    Context currentContext = ic;
    StringTokenizer tokenizer = new StringTokenizer(jndiName, "/", false);
    while (tokenizer.hasMoreTokens()) {
        String name = tokenizer.nextToken();
        if (tokenizer.hasMoreTokens()) {
            try {
                currentContext = (Context) currentContext.lookup(name);
            } catch (javax.naming.NameNotFoundException nnfex) {
                currentContext = currentContext.createSubcontext(name);
            }
        } else {
            currentContext.rebind(name, ref);
        }
    }
}

---

From source file:Util.java

/**
 * Lookup an object in the given context
 * /*  w  w  w .  java 2  s  . com*/
 * @param context
 *          the context
 * @param name
 *          the name to lookup
 * @param clazz
 *          the expected type
 * @return the object
 * @throws Exception
 *           for any error
 */
public static Object lookup(Context context, Name name, Class clazz) throws Exception {
    Object result = context.lookup(name);
    checkObject(context, name.toString(), result, clazz);
    return result;
}

---

From source file:Util.java

/**
 * Lookup an object in the given context
 * //from w w w .ja  v a 2s.  c  o m
 * @param context
 *          the context
 * @param name
 *          the name to lookup
 * @param clazz
 *          the expected type
 * @return the object
 * @throws Exception
 *           for any error
 */
public static Object lookup(Context context, String name, Class clazz) throws Exception {
    Object result = context.lookup(name);
    checkObject(context, name, result, clazz);
    return result;
}

---

From source file:eu.planets_project.tb.impl.persistency.ExperimentPersistencyImpl.java

/**
 * A Factory method to build a reference to this interface.
 * @return//from  w  w  w  .  ja v a  2  s  .  c  o m
 */
public static ExperimentPersistencyRemote getInstance() {
    try {
        Context jndiContext = getInitialContext();
        ExperimentPersistencyRemote dao_r = (ExperimentPersistencyRemote) PortableRemoteObject.narrow(
                jndiContext.lookup("testbed/ExperimentPersistencyImpl/remote"),
                ExperimentPersistencyRemote.class);
        return dao_r;
    } catch (NamingException e) {
        //TODO integrate message into logging mechanism
        System.out.println("Failure in getting PortableRemoteObject: " + e.toString());
        return null;
    }
}

---

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