com.tangosol.dev.component.NullStorage Maven / Gradle / Ivy
/*
* Copyright (c) 2000, 2020, Oracle and/or its affiliates.
*
* Licensed under the Universal Permissive License v 1.0 as shown at
* http://oss.oracle.com/licenses/upl.
*/
package com.tangosol.dev.component;
import java.io.IOException;
import com.tangosol.dev.assembler.ClassFile;
import com.tangosol.util.ErrorList;
import com.tangosol.util.StringTable;
/**
* NullStorage is a Storage that does nothing.
*
* @version 1.00, 03/14/2001
* @author gg
*/
public class NullStorage
extends BaseStorage
{
// ----- constructors ---------------------------------------------------
/**
* Create a null storage object.
*/
public NullStorage()
{
}
// ----- Components -----------------------------------------------------
/**
* Load the specified Component.
*
* @param sName fully qualified Component Definition name
* @param fReadOnly true if the loaded component will be read-only
* @param errlist the ErrorList object to log any derivation/
* modification errors to
*
* @return the specified Component Definition or null
*
* @exception ComponentException if an unrecoverable error occurs
*/
public Component loadComponent(String sName, boolean fReadOnly, ErrorList errlist)
throws ComponentException
{
return null;
}
/**
* Store the specified Component.
*
* @param cd the Component Definition to be stored
* @param errlist the ErrorList object to log any derivation/modification
* errors to
*
* @exception ComponentException if an unrecoverable error occurs
*/
public void storeComponent(Component cd, ErrorList errlist)
throws ComponentException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
// ----- Java Class Signatures ------------------------------------------
/**
* Load the specified Class Signature.
*
* @param sName qualified Java Class Signature (JCS) name
*
* @return the specified Class Signature
*
* @exception ComponentException if an unrecoverable error occurs
*/
public Component loadSignature(String sName)
throws ComponentException
{
return null;
}
/**
* Store the specified generated Java Class Signature.
*
* @param cdJCS the Java Class Signature
*
* @exception ComponentException if an unrecoverable error occurs
*/
public void storeSignature(Component cdJCS)
throws ComponentException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
/**
* Remove the specified Component.
*
* @param sName fully qualified Component Definition name
*
* @exception ComponentException if an unrecoverable error occurs
*/
public void removeComponent(String sName)
throws ComponentException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
// ----- Classes --------------------------------------------------------
/**
* Load the original (before any customization takes place) Java Class.
*
* @param sName fully qualified Java Class name
*
* @return the specified Class structure
*
* @exception ComponentException if an unrecoverable error occurs
*/
public ClassFile loadOriginalClass(String sName)
throws ComponentException
{
return null;
}
/**
* Load the specified generated Java Class.
*
* @param sName fully qualified Java Class name
*
* @return the specified Class structure
*
* @exception ComponentException if an unrecoverable error occurs
*/
public ClassFile loadClass(String sName)
throws ComponentException
{
return null;
}
/**
* Store the specified generated Java Class along with its listing
*
* @param clz the generated Class structure to store
* @param sListing (optional) the java listing of the class
*
* @exception ComponentException if an unrecoverable error occurs
*/
public void storeClass(ClassFile clz, String sListing)
throws ComponentException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
// ----- Java -------------------------------------------------------------
/**
* Load the source code for the specified (original) Java class.
*
* @param sName fully qualified Java Class name
*
* @return the specified Java source code as a String
*
* @exception IOException if an unrecoverable error occurs
*/
public String loadJava(String sName)
throws IOException
{
return null;
}
// ----- Resources --------------------------------------------------------
/**
* Load the original (before any customization takes place) resource.
*
* @param sName fully qualified resource name
*
* @return the specified resource as a byte array
*
* @exception IOException if an unrecoverable error occurs
*/
public byte[] loadOriginalResource(String sName)
throws IOException
{
return null;
}
/**
* Load the Resource Signature.
*
* @param sName fully qualified resource name
*
* @return the specified Resource Signature as a byte array
*
* @exception IOException if an unrecoverable error occurs
*/
public byte[] loadResourceSignature(String sName)
throws IOException
{
return null;
}
/**
* Store the specified Resource Signature.
*
* @param sName fully qualified resource name
* @param abData the specified Resource Signature as a byte array
*
* @exception IOException if an unrecoverable error occurs
*/
public void storeResourceSignature(String sName, byte[] abData)
throws IOException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
/**
* Remove the specified Resource Signature
*
* @param sName fully qualified resource name
*
* @exception IOException if an unrecoverable error occurs
*/
public void removeResourceSignature(String sName)
throws IOException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
/**
* Load the generated resource.
*
* @param sName fully qualified resource name
*
* @return the specified resource as a byte array
*
* @exception IOException if an unrecoverable error occurs
*/
public byte[] loadResource(String sName)
throws IOException
{
return null;
}
/**
* Store the specified resource.
*
* @param sName fully qualified resource name
* @param abData the specified resource as a byte array
*
* @exception IOException if an unrecoverable error occurs
*/
public void storeResource(String sName, byte[] abData)
throws IOException
{
throw new UnsupportedOperationException("Read-only storage: " + this);
}
// ---- component managment -----------------------------------------------
/**
* Return a StringTable which contains the names of Component Definitions
* (CD) that derive from the specified Component Definition
*
* @param sComponent the qualified CD name
* @param fQualify if set to true, return fully qualified CD names;
* otherwise -- non-qualified names
*
* @return StringTable object with Component Definition names as keys
*/
public StringTable getSubComponents(String sComponent, boolean fQualify)
{
return new StringTable();
}
/**
* Return a StringTable which contains the names of Component Definitions
* (CD) that belong to the specified package
*
* @param sPackage the qualified package name
* @param fQualify if set to true, return fully qualified CD names;
* otherwise -- non-qualified names
*
* @return StringTable object with CD names as keys
*/
public StringTable getPackageComponents(String sPackage, boolean fQualify)
{
return new StringTable();
}
/**
* Return a StringTable which contains the names of sub-packages in
* the specified component package
*
* @param sPackage the qualified package name; pass null to retrieve
* the top level component packages
* @param fQualify if set to true, return fully qualified package names;
* otherwise -- non-qualified names
* @param fSubs if set to true, returns the entire tree of sub-packages
*
* @return StringTable object with package names as keys
*/
public StringTable getComponentPackages(String sPackage, boolean fQualify, boolean fSubs)
{
return new StringTable();
}
/**
* Return a StringTable which contains the names of Java Class Signature
* (JCS) names that belong to the specified java class package
* (i.e. "javax.swing")
*
* @param sPackage the qualified package name
* @param fQualify if set to true, return fully qualified JCS names;
* otherwise -- non-qualified names
*
* @return StringTable object with JCS names as keys
*/
public StringTable getPackageSignatures(String sPackage, boolean fQualify)
{
return new StringTable();
}
/**
* Return a StringTable which contains the names of sub-packages in
* the specified java class package
* (i.e. "javax.swing" is a sub-package of "javax" package)
*
* @param sPackage the qualified package name; pass null to retrieve
* the top level java class packages
* @param fQualify if set to true, return fully qualified JCS names;
* otherwise -- non-qualified names
* @param fSubs if set to true, returns the entire tree of sub-packages
*
* @return StringTable object with package names as keys
*/
public StringTable getSignaturePackages(String sPackage, boolean fQualify, boolean fSubs)
{
return new StringTable();
}
/**
* Return a StringTable which contains the names of resource
* names that belong to the specified package
* (i.e. "img/tde")
*
* @param sPackage the qualified package name
* @param fQualify if set to true, return fully qualified resource names;
* otherwise -- non-qualified names
*
* @return StringTable object with resource names as keys
*/
public StringTable getPackageResources(String sPackage, boolean fQualify)
{
return new StringTable();
}
/**
* Return a StringTable which contains the names of sub-packages in
* the specified resource package
* (i.e. "img/tde" is a sub-package of "img" package)
*
* @param sPackage the qualified package name; pass null to retrieve
* the top level resource packages
* @param fQualify if set to true, return fully qualified package names;
* otherwise -- non-qualified names
* @param fSubs if set to true, returns the entire tree of sub-packages
*
* @return StringTable object with package names as keys
*/
public StringTable getResourcePackages(String sPackage, boolean fQualify, boolean fSubs)
{
return new StringTable();
}
/**
* Provide a short human-readable description of the trait.
*
* @return a human-readable description of this trait
*/
public String toString()
{
return CLASS;
}
// ----- data members ---------------------------------------------------
/**
* The name of this class.
*/
private static final String CLASS = "NullStorage";
}
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