org.apache.openjpa.lib.conf.Configuration Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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* specific language governing permissions and limitations
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*/
package org.apache.openjpa.lib.conf;
import java.beans.BeanInfo;
import java.beans.PropertyChangeListener;
import java.io.Serializable;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import org.apache.openjpa.lib.log.Log;
import org.apache.openjpa.lib.log.LogFactory;
import org.apache.openjpa.lib.util.Closeable;
/**
* Interface for generic configuration objects. Includes the ability
* to write configuration to and from {@link Properties} instances. Instances
* are threadsafe for reads, but not for writes.
*
* @author Marc Prud'hommeaux
* @author Abe White
*/
public interface Configuration
extends BeanInfo, Serializable, Closeable, Cloneable {
/**
* Attribute of returned {@link Value} property descriptors listing
* recognized values for the property.
*/
String ATTRIBUTE_ALLOWED_VALUES = "allowedValues";
/**
* Attribute of the returned {@link Value} property descriptors naming
* the property's type or category.
*/
String ATTRIBUTE_TYPE = "propertyType";
/**
* Attribute of the returned {@link Value} property descriptors naming
* the property' hierarchical category.
*/
String ATTRIBUTE_CATEGORY = "propertyCategory";
/**
* Attribute of the returned {@link Value} property descriptors naming
* the property's ordering in its category.
*/
String ATTRIBUTE_ORDER = "propertyCategoryOrder";
/**
* Attribute of the returned {@link Value} property descriptors naming
* the interface that plugin values for this property must implement.
*/
String ATTRIBUTE_INTERFACE = "propertyInterface";
/**
* Attribute of the returned {@link Value} property descriptors naming
* the property's name in XML format (i.e. two-words instead of TwoWords).
*/
String ATTRIBUTE_XML = "xmlName";
int INIT_STATE_LIQUID = 0;
int INIT_STATE_FREEZING = 1;
int INIT_STATE_FROZEN = 2;
/**
* Return the product name. Defaults to openjpa.
*/
String getProductName();
/**
* Set the product name.
*/
void setProductName(String name);
/**
* The log factory. If no log factory has been set explicitly,
* this method will create one.
*/
LogFactory getLogFactory();
/**
* The log factory.
*/
void setLogFactory(LogFactory factory);
/**
* Log plugin setting.
*/
String getLog();
/**
* Log plugin setting.
*/
void setLog(String log);
/**
* Return the log for the given category.
*
* @see #getLogFactory
*/
Log getLog(String category);
/**
* Return the log to use for configuration messages.
*/
Log getConfigurationLog();
/**
* An environment-specific identifier for this configuration. This
* might correspond to a JPA persistence-unit name, or to some other
* more-unique value available in the current environment.
*
* @since 0.9.7
*/
String getId();
/**
* An environment-specific identifier for this configuration. This
* might correspond to a JPA persistence-unit name, or to some other
* more-unique value available in the current environment.
*
* @since 0.9.7
*/
void setId(String id);
/**
* Return the {@link Value} for the given property, or null if none.
*/
Value getValue(String property);
/**
* Return the set of all {@link Value}s.
*/
Value[] getValues();
/**
* Add the given value to the set of configuration properties. This
* method replaces any existing value under the same property.
*/
T addValue(T val);
//public Value addValue(Value val);
/**
* Remove the given value from the set of configuration properties.
*/
boolean removeValue(Value val);
/**
* A properties representation of this Configuration.
* Note that changes made to this properties object will
* not be automatically reflected in this Configuration object.
*
* @param storeDefaults if true, then properties will be written
* out even if they match the default value for a property
*/
Map toProperties(boolean storeDefaults);
/**
* Get the set of all known property keys, including any equivalent keys,
* appropriately prefixed.
*
* @param propertyName the name of the property for which the keys are
* to be retrieved.
*
* @since 2.0.0
*/
List getPropertyKeys(String propertyName);
/**
* Get the set of all known property keys, including any equivalent keys,
* appropriately prefixed.
*
* @since 2.0.0
*/
Set getPropertyKeys();
/**
* Set this Configuration via the given map. Any keys missing from
* the given map will not be set. Note that changes made to this map
* will not be automatically reflected in this Configuration object.
* IMPORTANT: If the map contains instantiated objects(rather than
* string values), only the string representation of those objects
* are considered in this configuration's equals and
* hashCode methods. If the object's property has no
* string form(such as an {@link ObjectValue}), the object is not
* part of the equality and hashing calculations.
*/
void fromProperties(Map map);
/**
* Adds a listener for any property changes. The property events fired
* will not include the old value.
*
* @param listener the listener to receive notification of property changes
*/
void addPropertyChangeListener(PropertyChangeListener listener);
/**
* Removes a listener for any property changes.
*
* @param listener the listener to remove
*/
void removePropertyChangeListener(PropertyChangeListener listener);
/**
* Lock down the configuration's state. Attempting to set state on a
* read-only configuration results in an exception.
*/
void setReadOnly(int readOnly);
/**
* Return true if this configuration is immutable.
*/
boolean isReadOnly();
/**
* Call the instantiating get methods for all values. Up-front
* instantiation allows one to avoid the synchronization necessary with
* lazy instantiation.
*/
void instantiateAll();
/**
* Free the resources used by this object.
*/
@Override void close();
/**
* Return a copy of this configuration.
*/
Object clone();
/**
* Gets a class loader that can be additionally used to load custom plugin values.
*
* @see Configurations#newInstance(String, ClassLoader)
* @return an additional classloader for loading custom plugins. Can be null.
* @since 2.3.0
*/
ClassLoader getUserClassLoader();
/**
* Sets an additional classloader to load custom plugin values.
* In OSGi environment, we internally set the bundle class loader as
* the user class loader.
*
* @param loader a class loader to load custom plugin values
* @see PersistenceProviderImpl.createEntityManagerFactory(String, Map)
* @since 2.3.0
*/
void setUserClassLoader(ClassLoader loader);
}