java.util.Hashtable.clone()方法的使用及代码示例
本文整理了Java中java.util.Hashtable.clone()方法的一些代码示例，展示了Hashtable.clone()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Hashtable.clone()方法的具体详情如下：
包路径：java.util.Hashtable
类名称：Hashtable
方法名：clone
Hashtable.clone介绍
[英]Returns a new Hashtable with the same key/value pairs, capacity and load factor.
[中]返回具有相同键/值对、容量和负载因子的新哈希表。
代码示例
代码示例来源：origin: log4j/log4j
public
final
Object childValue(Object parentValue) {
Hashtable ht = (Hashtable) parentValue;
if(ht != null) {
return ht.clone();
} else {
return null;
}
}
}代码示例来源：origin: wildfly/wildfly
@SuppressWarnings("unchecked")
public WrapperInitialContext(final Hashtable<Object,Object> environment) {
if (environment != null) {
this.environment = (Hashtable<Object,Object>) environment.clone();
} else {
this.environment = null;
}
}代码示例来源：origin: wildfly/wildfly
@Override
public Hashtable<String, Object> getEnvironment() throws NamingException {
return (Hashtable<String, Object>) environment.clone();
}代码示例来源：origin: wildfly/wildfly
public Object clone() {
return super.clone();
}代码示例来源：origin: apache/activemq
public Hashtable<String, Object> getEnvironment() throws NamingException {
return (Hashtable<String, Object>)environment.clone();
}代码示例来源：origin: kiegroup/drools
@SuppressWarnings("rawtypes")
public Context getInitialContext(Hashtable environment) throws NamingException {
return new MemoryContext((Hashtable) environment.clone()) {
@Override
public Object lookup(String name) throws NamingException {
Object toReturn = super.lookup(name);
if (toReturn == null) {
throw new NamingException("Name not found: " + name);
}
return toReturn;
}
@Override
public void close() throws NamingException {
// simple-jndi will close your context: http://meri-stuff.blogspot.co.uk/2012/01/running-jndi-and-jpa-without-j2ee.html
}
};
}
}代码示例来源：origin: wildfly/wildfly
/**
* Returns the current environment.
*
* @return Environment.
*/
public Hashtable getEnvironment() throws NamingException {
if (_env == null) {
return new Hashtable(5, 0.75f);
} else {
return (Hashtable) _env.clone();
}
}代码示例来源：origin: kiegroup/jbpm
@SuppressWarnings("rawtypes")
public Context getInitialContext(Hashtable environment) throws NamingException {
return new MemoryContext((Hashtable)environment.clone()) {
@Override
public Object lookup(String name) throws NamingException {
Object toReturn = super.lookup(name);
if (toReturn == null) {
throw new NamingException("Name not found: " + name);
}
return toReturn;
}
@Override
public void close() throws NamingException {
// simple-jndi will close your context: http://meri-stuff.blogspot.co.uk/2012/01/running-jndi-and-jpa-without-j2ee.html
}
};
}
}代码示例来源：origin: wildfly/wildfly
public java.lang.Object removeFromEnvironment(String propName)
throws NamingException {
if (_env != null && _env.get(propName) != null) {
// copy-on-write
_env = (Hashtable) _env.clone();
return _env.remove(propName);
}
return null;
}代码示例来源：origin: log4j/log4j
/**
Obtain a copy of this thread's MDC prior to serialization or
asynchronous logging.
*/
public
void getMDCCopy() {
if(mdcCopyLookupRequired) {
mdcCopyLookupRequired = false;
// the clone call is required for asynchronous logging.
// See also bug #5932.
Hashtable t = (Hashtable) MDC.getContext();
if(t != null) {
mdcCopy = (Hashtable) t.clone();
}
}
}代码示例来源：origin: log4j/log4j
/**
Obtain a copy of this thread's MDC prior to serialization or
asynchronous logging.
*/
public
void getMDCCopy() {
if(mdcCopyLookupRequired) {
mdcCopyLookupRequired = false;
// the clone call is required for asynchronous logging.
// See also bug #5932.
Hashtable t = (Hashtable) MDC.getContext();
if(t != null) {
mdcCopy = (Hashtable) t.clone();
}
}
}代码示例来源：origin: wildfly/wildfly
/**
* Adds to the environment for the current context.
* Record change but do not reinitialize ORB.
*
* @param propName The property name.
* @param propValue The ORB.
* @return the previous value of this property if any.
*/
public java.lang.Object addToEnvironment(String propName,
java.lang.Object propValue)
throws NamingException {
if (_env == null) {
_env = new Hashtable(7, 0.75f);
} else {
// copy-on-write
_env = (Hashtable) _env.clone();
}
return _env.put(propName, propValue);
}代码示例来源：origin: robovm/robovm
/**
* Copy on write for the internal tables in this context.
*
* <p>This class is optimized for the normal case where most
* elements do not contain Namespace declarations. In that case,
* the Context2 will share data structures with its parent.
* New tables are obtained only when new declarations are issued,
* so they can be popped off the stack.</p>
*
* <p> JJK: **** Alternative: each Context2 might declare
* _only_ its local bindings, and delegate upward if not found.</p>
*/
private void copyTables ()
{
// Start by copying our parent's bindings
prefixTable = (Hashtable)prefixTable.clone();
uriTable = (Hashtable)uriTable.clone();
// Replace the caches with empty ones, rather than
// trying to determine which bindings should be flushed.
// As far as I can tell, these caches are never actually
// used in Xalan... More efficient to remove the whole
// cache system? ****
if(elementNameTable!=null)
elementNameTable=new Hashtable();
if(attributeNameTable!=null)
attributeNameTable=new Hashtable();
tablesDirty = true;
}代码示例来源：origin: robovm/robovm
/**
* Copy on write for the internal tables in this context.
*
* <p>This class is optimized for the normal case where most
* elements do not contain Namespace declarations.</p>
*/
private void copyTables ()
{
if (prefixTable != null) {
prefixTable = (Hashtable)prefixTable.clone();
} else {
prefixTable = new Hashtable();
}
if (uriTable != null) {
uriTable = (Hashtable)uriTable.clone();
} else {
uriTable = new Hashtable();
}
elementNameTable = new Hashtable();
attributeNameTable = new Hashtable();
declSeen = true;
}代码示例来源：origin: apache/groovy
public synchronized Object clone() {
return project.getProperties().clone();
}代码示例来源：origin: org.netbeans.api/org-openide-util
@Override
public void setProperties(Hashtable props) {
props = (Hashtable) props.clone();
consumer.setProperties(props);
}
}代码示例来源：origin: wildfly/wildfly
/**
* Create a CNCtx object. Gets the initial naming
* reference for the COS Naming Service from the ORB.
* The ORB can be passed in via the java.naming.corba.orb property
* or be created using properties in the environment properties.
*
* @param env Environment properties for initializing name service.
* @throws NamingException Cannot initialize ORB or naming context.
*/
CNCtx(Hashtable env) throws NamingException {
if (env != null) {
env = (Hashtable) env.clone();
}
_env = env;
federation = "true".equals(env != null ? env.get(FED_PROP) : null);
initOrbAndRootContext(env);
}代码示例来源：origin: wildfly/wildfly
@Override
public Object lookup(final String name) throws NamingException {
try {
final int index = name.indexOf('#');
if (index != -1) {
final String server = name.substring(0, index);
final String lookup = name.substring(index + 1);
@SuppressWarnings("unchecked")
final Hashtable<Object,Object> environment = (Hashtable<Object,Object>) this.environment.clone();
environment.put(Context.PROVIDER_URL, server);
environment.put(ORBConstants.ORB_SERVER_ID_PROPERTY, "1");
return CNCtxFactory.INSTANCE.getInitialContext(environment).lookup(lookup);
} else {
return CNCtxFactory.INSTANCE.getInitialContext(environment).lookup(name);
}
} catch (NamingException e) {
throw e;
} catch (Exception e) {
throw new NamingException(e.getMessage());
}
}代码示例来源：origin: robovm/robovm
/**
* This method makes a clone of this object.
*
*/
public Object clone() throws CloneNotSupportedException {
NamespaceMappings clone = new NamespaceMappings();
clone.m_nodeStack = (NamespaceMappings.Stack) m_nodeStack.clone();
clone.count = this.count;
clone.m_namespaces = (Hashtable) m_namespaces.clone();
clone.count = count;
return clone;
}代码示例来源：origin: wildfly/wildfly
/**
* This method is used by the iiop and iiopname URL Context factories.
*/
public static ResolveResult createUsingURL(String url, Hashtable env)
throws NamingException {
CNCtx ctx = new CNCtx();
if (env != null) {
env = (Hashtable) env.clone();
}
ctx._env = env;
String rest = ctx.initUsingUrl(env != null ? (org.omg.CORBA.ORB) env.get("java.naming.corba.orb") : null,
url, env);
// rest is the INS name
// Return the parsed form to prevent subsequent lookup
// from parsing the string as a composite name
// The caller should be aware that a toString() of the name
// will yield its INS syntax, rather than a composite syntax
return new ResolveResult(ctx, parser.parse(rest));
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