Example usage for java.util Hashtable isEmpty

Introduction

In this page you can find the example usage for java.util Hashtable isEmpty.

Prototype

public synchronized boolean isEmpty() 

Source Link

Document

Tests if this hashtable maps no keys to values.

Usage

From source file:it.greenvulcano.util.txt.TextUtils.java

/**
 * @param input//from w ww. j  a  va  2 s  .c o m
 * @param phPrefix
 * @param phSuffix
 * @param phValues
 * @return the string with placeholders replaced
 * 
 */
public static String replacePlaceholder(String input, String phPrefix, String phSuffix,
        Hashtable<String, String> phValues) {
    if (input == null) {
        return null;
    }
    if (input.equals("")) {
        return "";
    }
    if (phValues == null) {
        return input;
    }
    if (phValues.isEmpty()) {
        return input;
    }
    if ((phPrefix == null) || (phSuffix == null)) {
        return input;
    }
    if ((phPrefix.equals("")) || (phSuffix.equals(""))) {
        return input;
    }

    int phPlen = phPrefix.length();
    int phSlen = phSuffix.length();
    int startNextToken = 0;
    int endNextToken = 0;
    int maxPosition = input.length();

    StringBuilder buf = new StringBuilder("");
    while (startNextToken < maxPosition) {
        endNextToken = input.indexOf(phPrefix, startNextToken);
        if (endNextToken != -1) {
            String currToken = input.substring(startNextToken, endNextToken);
            int endPH = input.indexOf(phSuffix, endNextToken + phPlen);
            String phName = input.substring(endNextToken + phPlen, endPH);
            String replacement = phPrefix + phName + phSuffix;
            Object phValue = phValues.get(phName);
            if (phValue != null) {
                replacement = StringEscapeUtils.unescapeJava(phValue.toString());
            }
            if (currToken.length() > 0) {
                buf.append(currToken).append(replacement);
            } else {
                buf.append(replacement);
            }
            startNextToken = endPH + phSlen;
        } else {
            String currToken = input.substring(startNextToken);
            buf.append(currToken);
            startNextToken = maxPosition;
        }
    }
    return buf.toString();
}

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From source file:org.wso2.carbon.rssmanager.core.util.RSSManagerUtil.java

/**
 * Do jndi look up of data source/*from   w  w w .  j a v a 2  s  .co  m*/
 *
 * @param dataSourceName data source name
 * @param jndiProperties jndi properties
 * @return DataSource
 */
public static DataSource lookupDataSource(String dataSourceName,
        final Hashtable<Object, Object> jndiProperties) {
    try {
        if (jndiProperties == null || jndiProperties.isEmpty()) {
            return (DataSource) InitialContext.doLookup(dataSourceName);
        }
        final InitialContext context = new InitialContext(jndiProperties);
        return (DataSource) context.doLookup(dataSourceName);
    } catch (Exception e) {
        throw new RuntimeException("Error in looking up data source: " + e.getMessage(), e);
    }
}

---

From source file:eionet.gdem.utils.Utils.java

/**
 * Is Null or empty hash table/* w  w w.j a  v a2  s.c  o  m*/
 * @param h hash table
 * @return True if Null or empty hash table
 */
public static boolean isNullHashtable(Hashtable h) {
    if (h == null) {
        return true;
    } else if (h.isEmpty()) {
        return true;
    }

    return false;
}

---

From source file:org.globus.workspace.network.defaults.DefaultAssociationAdapter.java

public String[] getAssociationNames() throws ManageException {

    final Hashtable associations = this.persistence.currentAssociations(false);
    if (associations == null || associations.isEmpty()) {
        return zeroLen;
    } else {//from  w w  w  .ja  v  a 2  s  .co m
        final Set keys = associations.keySet();
        return (String[]) keys.toArray(new String[keys.size()]);
    }
}

---

From source file:com.alfaariss.oa.engine.attribute.gather.processor.file.FileGatherer.java

/**
 * Gathers attributes from file./*  w w  w .  j  a  v a2 s  . com*/
 * 
 * First adds the optionaly configured global attributes then updates with 
 * the specific user attributes. 
 * @see com.alfaariss.oa.engine.core.attribute.gather.processor.IProcessor#process(java.lang.String, com.alfaariss.oa.api.attribute.IAttributes)
 */
public void process(String id, IAttributes attributes) throws AttributeException {
    if (attributes == null)
        throw new IllegalArgumentException("Suplied attributes parameter is empty");
    try {
        ConfigurationManager fileConfig = getConfiguration();

        Enumeration enumGlobal = _htGlobal.elements();
        while (enumGlobal.hasMoreElements()) {
            FileAttribute fAttr = (FileAttribute) enumGlobal.nextElement();
            String sName = fAttr.getName();
            List<?> listValues = fAttr.getValues();
            String sMappedName = _htMapper.get(sName);
            if (sMappedName != null)
                sName = sMappedName;

            if (_listGather.isEmpty() || _listGather.contains(sName)) {
                if (listValues.size() > 1)
                    attributes.put(sName, fAttr.getFormat(), listValues);
                else
                    attributes.put(sName, fAttr.getFormat(), listValues.get(0));
            }
        }

        Element eUser = fileConfig.getSection(null, "user", "id=" + id);
        if (eUser != null) {
            Hashtable htAttributes = getFileAttributes(fileConfig, eUser);
            if (!htAttributes.isEmpty()) {
                Enumeration enumAttributes = htAttributes.elements();
                while (enumAttributes.hasMoreElements()) {
                    FileAttribute fAttr = (FileAttribute) enumAttributes.nextElement();
                    String sName = fAttr.getName();
                    List<?> listValues = fAttr.getValues();
                    String sMappedName = _htMapper.get(sName);
                    if (sMappedName != null)
                        sName = sMappedName;

                    if (_listGather.isEmpty() || _listGather.contains(sName)) {
                        if (listValues.size() > 1)
                            attributes.put(sName, fAttr.getFormat(), listValues);
                        else
                            attributes.put(sName, fAttr.getFormat(), listValues.get(0));

                    }
                }
            } else
                _logger.debug("No user specific attributes found");
        } else
            _logger.debug("No user found in attributes file");
    } catch (AttributeException e) {
        throw e;
    } catch (Exception e) {
        _logger.fatal("Internal error during attribute processing", e);
        throw new AttributeException(SystemErrors.ERROR_INTERNAL);
    }
}

---

From source file:org.asimba.engine.attribute.gather.processor.file.AsimbaUsersXmlGatherer.java

public void process(String sUserId, IAttributes oAttributes) throws AttributeException {
    if (oAttributes == null)
        throw new IllegalArgumentException("IAttributes was not provided");
    try {/* w ww . j  a  v  a 2  s  .c  o  m*/
        ConfigurationManager oCM = getConfiguration();

        // First, process global attributes
        Enumeration<FileAttribute> oEnumGlobal = _htGlobal.elements();
        while (oEnumGlobal.hasMoreElements()) {
            FileAttribute fAttr = oEnumGlobal.nextElement();
            String sName = fAttr.getName();
            List<?> listValues = fAttr.getValues();
            String sMappedName = _htMapper.get(sName);
            if (sMappedName != null)
                sName = sMappedName;

            if (_listGather.isEmpty() || _listGather.contains(sName)) {
                // Ignore multi-value, only return the first value
                if (listValues.size() > 1)
                    oAttributes.put(sName, fAttr.getFormat(), listValues);
                else
                    oAttributes.put(sName, fAttr.getFormat(), listValues.get(0));
            }
        }

        Element elUser = oCM.getSection(null, "user", "id=" + sUserId);
        if (elUser != null) {
            Hashtable<String, FileAttribute> htAttributes = getFileAttributes(oCM, elUser);
            if (!htAttributes.isEmpty()) {
                Enumeration<FileAttribute> enumAttributes = htAttributes.elements();
                while (enumAttributes.hasMoreElements()) {
                    FileAttribute fAttr = enumAttributes.nextElement();
                    String sName = fAttr.getName();
                    List<?> listValues = fAttr.getValues();
                    String sMappedName = _htMapper.get(sName);
                    if (sMappedName != null)
                        sName = sMappedName;

                    if (_listGather.isEmpty() || _listGather.contains(sName)) {
                        // Ignore multi-value, only return the first value
                        if (listValues.size() > 1)
                            oAttributes.put(sName, fAttr.getFormat(), listValues);
                        else
                            oAttributes.put(sName, fAttr.getFormat(), listValues.get(0));

                    }
                }
            } else
                _oLogger.debug("No user specific attributes found");
        } else
            _oLogger.debug("No user found in attributes file");
    } catch (AttributeException e) {
        throw e;
    } catch (Exception e) {
        _oLogger.fatal("Internal error during attribute processing", e);
        throw new AttributeException(SystemErrors.ERROR_INTERNAL);
    }
}

---

From source file:net.sourceforge.floggy.persistence.fr2422928.FR2422928MigrationTest.java

/**
 * DOCUMENT ME!/*from  www  .  jav a  2 s.  c o m*/
*
* @throws Exception DOCUMENT ME!
*/
public void testMissingField() throws Exception {
    MigrationManager um = MigrationManager.getInstance();
    Enumeration enumeration = um.start(FR2422928.class, null);

    try {
        while (enumeration.hasMoreElements()) {
            Hashtable data = (Hashtable) enumeration.nextElement();
            assertFalse("Should not be empty!", data.isEmpty());
            assertEquals(new Long(id), (Long) data.get("id"));
        }
    } finally {
        um.finish(FR2422928.class);
    }
}

---

From source file:net.sourceforge.floggy.persistence.fr2422928.FR2422928MigrationTest.java

/**
 * DOCUMENT ME!/*w  w w . j  a  va  2 s .  c o m*/
*
* @throws Exception DOCUMENT ME!
*/
public void testNewField() throws Exception {
    MigrationManager um = MigrationManager.getInstance();
    Enumeration enumeration = um.start(FR2422928.class, null);

    try {
        while (enumeration.hasMoreElements()) {
            Hashtable data = (Hashtable) enumeration.nextElement();
            assertFalse("Should not be empty!", data.isEmpty());
            assertNull(data.get("node"));
        }
    } finally {
        um.finish(FR2422928.class);
    }
}

---

From source file:net.sourceforge.floggy.persistence.fr2422928.FR2422928MigrationTest.java

/**
 * DOCUMENT ME!//from  w ww . j  av a 2 s  .  c  om
*
* @throws Exception DOCUMENT ME!
*/
public void testRemaingField() throws Exception {
    MigrationManager um = MigrationManager.getInstance();
    Enumeration enumeration = um.start(FR2422928.class, null);

    try {
        while (enumeration.hasMoreElements()) {
            Hashtable data = (Hashtable) enumeration.nextElement();
            assertFalse("Should not be empty!", data.isEmpty());
            assertEquals(name, (String) data.get("name"));
            assertEquals(checkpoint, data.get("checkpoint"));
        }
    } finally {
        um.finish(FR2422928.class);
    }
}

---

From source file:net.sourceforge.floggy.persistence.fr2422928.FR2422928MigrationTest.java

/**
 * DOCUMENT ME!// www  . ja va 2  s .  c om
*
* @throws Exception DOCUMENT ME!
*/
public void testAfterUpddate() throws Exception {
    MigrationManager um = MigrationManager.getInstance();
    Enumeration enumeration = um.start(FR2422928.class, null);

    PersistableMetadata metadata = PersistableMetadataManager.getRMSBasedMetadata(FR2422928.class.getName());

    assertEquals(PersistableMetadataManager.VERSION_1_3_0, metadata.getRecordStoreVersion());

    try {
        while (enumeration.hasMoreElements()) {
            Hashtable data = (Hashtable) enumeration.nextElement();
            assertFalse("Should not be empty!", data.isEmpty());
            assertEquals(name, data.get("name"));
            assertEquals(checkpoint, data.get("checkpoint"));

            FR2422928 persistable = new FR2422928();
            persistable.setName((String) data.get("name"));
            persistable.setCheckpoint((Calendar) data.get("checkpoint"));
            enumeration.update(persistable);
        }
    } finally {
        um.finish(FR2422928.class);
    }

    metadata = PersistableMetadataManager.getRMSBasedMetadata(FR2422928.class.getName());

    assertEquals(PersistableMetadataManager.getBytecodeVersion(), metadata.getRecordStoreVersion());

    try {
        ObjectSet os = manager.find(FR2422928.class, null, null);
        assertEquals(1, os.size());

        FR2422928 persistable = (FR2422928) os.get(0);
        assertEquals(name, persistable.getName());
        assertEquals(checkpoint, persistable.getCheckpoint());
    } catch (Exception ex) {
        fail(ex.getMessage());
    }
}

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