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/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: Configuration
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2014, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes or is based on software developed by other
* organizations as listed in the NOTICE file.
*/
package org.openmdx.kernel.configuration;
import java.util.Set;
import org.w3c.cci2.SparseArray;
/**
* The configuration interface
*/
public interface Configuration {
/**
* Provide the entry names of the single-valued entries
*
* @return the single-valued entry entry name set
*/
Set singleValuedEntryNames();
/**
* Provide the entry names of the multi-valued entries
*
* @return the multi-valued entry entry name set
*/
Set multiValuedEntryNames();
/**
* Tells whether a given flag is enabled or not
*
* @param entryName the configuration entry's name
* @param defaultValue the default in case the value is neither
* true nor false
*
* @return the flag value
*/
boolean isEnabled(
String entryName,
boolean defaultValue
);
/**
* Retrieve a single-value configuration entry
*
* @param entryName the configuration entry's name
* @param defaultValue the default in case the entry is absent
*
* @return the entry's value if it is present, the default value otherwise
*/
T getValue(
String entryName,
T defaultValue
);
/**
* Retrieve a single-value configuration entry
* @param entryName the configuration entry's name
* @param type the component type is used to parse or cast the value
*
* @return the entry's value if it is present, null otherwise
*/
T getOptionalValue(
String entryName,
Class type
);
/**
* Retrieve a multi-value configuration entry
* @param entryName the configuration entry's name
* @param elementType the element type is used to parse or cast the single values
*
* @return the entry's values if present, an empty sparse array otherwise
*/
SparseArray getValues(
String entryName,
Class elementType
);
}
