org.odpi.openmetadata.commonservices.generichandlers.MetadataElementConverter Maven / Gradle / Ivy
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/* SPDX-License-Identifier: Apache-2.0 */
/* Copyright Contributors to the ODPi Egeria project. */
package org.odpi.openmetadata.commonservices.generichandlers;
import org.odpi.openmetadata.frameworks.openmetadata.metadataelements.ElementHeader;
import org.odpi.openmetadata.frameworks.openmetadata.metadataelements.MetadataElementSummary;
import org.odpi.openmetadata.frameworks.connectors.ffdc.PropertyServerException;
import org.odpi.openmetadata.frameworks.openmetadata.types.OpenMetadataType;
import org.odpi.openmetadata.repositoryservices.connectors.stores.metadatacollectionstore.properties.instances.EntityDetail;
import org.odpi.openmetadata.repositoryservices.connectors.stores.metadatacollectionstore.properties.instances.InstancePropertyValue;
import org.odpi.openmetadata.repositoryservices.connectors.stores.metadatacollectionstore.properties.instances.Relationship;
import org.odpi.openmetadata.repositoryservices.connectors.stores.metadatacollectionstore.repositoryconnector.OMRSRepositoryHelper;
import java.lang.reflect.InvocationTargetException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* MetadataElementConverter transfers the relevant properties from an Open Metadata Repository Services (OMRS)
* EntityDetail object into a MetadataElementSummary bean.
*/
public class MetadataElementConverter extends OMFConverter
{
/**
* Constructor
*
* @param repositoryHelper helper object to parse entity
* @param serviceName name of this component
* @param serverName local server name
*/
public MetadataElementConverter(OMRSRepositoryHelper repositoryHelper,
String serviceName,
String serverName)
{
super(repositoryHelper, serviceName, serverName);
}
/**
* Using the supplied entity, return a new instance of the bean. This is used for most beans that have
* a one to one correspondence with the repository instances.
*
* @param beanClass name of the class to create
* @param entity entity containing the properties
* @param methodName calling method
* @return bean populated with properties from the entity supplied
* @throws PropertyServerException there is a problem instantiating the bean
*/
@Override
public B getNewBean(Class beanClass,
EntityDetail entity,
String methodName) throws PropertyServerException
{
try
{
/*
* This is initial confirmation that the generic converter has been initialized with an appropriate bean class.
*/
B returnBean = beanClass.getDeclaredConstructor().newInstance();
if (returnBean instanceof MetadataElementSummary bean)
{
ElementHeader elementHeader = new ElementHeader();
/*
* Check that the entity is of the correct type.
*/
this.setUpElementHeader(elementHeader, entity, OpenMetadataType.OPEN_METADATA_ROOT.typeName, methodName);
bean.setElementHeader(elementHeader);
/*
* Save the properties as a map.
*/
if (entity.getProperties() != null)
{
Iterator propertyNames = entity.getProperties().getPropertyNames();
Map propertyValues = new HashMap<>();
while (propertyNames.hasNext())
{
String propertyName = propertyNames.next();
InstancePropertyValue instancePropertyValue = entity.getProperties().getPropertyValue(propertyName);
propertyValues.put(propertyName, instancePropertyValue.valueAsString());
}
bean.setProperties(propertyValues);
}
}
return returnBean;
}
catch (IllegalAccessException | InstantiationException | ClassCastException | NoSuchMethodException | InvocationTargetException error)
{
super.handleInvalidBeanClass(beanClass.getName(), error, methodName);
}
return null;
}
/**
* Using the supplied instances, return a new instance of the bean. This is used for beans that
* contain a combination of the properties from an entity and that of a connected relationship.
*
* @param beanClass name of the class to create
* @param entity entity containing the properties
* @param relationship relationship containing the properties
* @param methodName calling method
* @return bean populated with properties from the instances supplied
* @throws PropertyServerException there is a problem instantiating the bean
*/
@Override
public B getNewBean(Class beanClass,
EntityDetail entity,
Relationship relationship,
String methodName) throws PropertyServerException
{
return this.getNewBean(beanClass, entity, methodName);
}
}