org.javers.core.metamodel.type.ManagedClass Maven / Gradle / Ivy
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JaVers - object auditing and diff framework for Java
package org.javers.core.metamodel.type;
import org.javers.common.collections.Lists;
import org.javers.common.exception.JaversException;
import org.javers.common.validation.Validate;
import java.util.*;
import java.util.function.Consumer;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import static org.javers.common.collections.Lists.immutableCopyOf;
import static org.javers.common.exception.JaversExceptionCode.PROPERTY_NOT_FOUND;
import static org.javers.common.validation.Validate.argumentsAreNotNull;
/**
* Decomposes a class into list of properties.
*
* @author bartosz walacik
*/
class ManagedClass {
private final Class baseJavaClass;
private final Map propertiesByName;
private final List managedProperties;
private final List looksLikeId;
private final ManagedPropertiesFilter managedPropertiesFilter;
ManagedClass(Class baseJavaClass, List managedProperties, List looksLikeId, ManagedPropertiesFilter managedPropertiesFilter) {
argumentsAreNotNull(baseJavaClass, managedProperties, looksLikeId, managedPropertiesFilter);
this.baseJavaClass = baseJavaClass;
this.looksLikeId = immutableCopyOf(looksLikeId);
this.managedPropertiesFilter = managedPropertiesFilter;
this.managedProperties = immutableCopyOf(managedProperties);
this.propertiesByName = new HashMap<>();
managedProperties.forEach(property -> propertiesByName.put(property.getName(),property));
}
static ManagedClass unknown() {
return new ManagedClass(Object.class, Collections.emptyList(), Collections.emptyList(), ManagedPropertiesFilter.empty());
}
ManagedClass createShallowReference(){
return new ManagedClass(baseJavaClass, Collections.emptyList(), getLooksLikeId(), ManagedPropertiesFilter.empty());
}
ManagedPropertiesFilter getManagedPropertiesFilter() {
return managedPropertiesFilter;
}
/**
* Returns all managed properties, unmodifiable list
*/
List getManagedProperties() {
return managedProperties;
}
List getLooksLikeId() {
return looksLikeId;
}
Set getPropertyNames(){
return Collections.unmodifiableSet(propertiesByName.keySet());
}
/**
* returns managed properties subset
*/
List getManagedProperties(Predicate query) {
return Lists.positiveFilter(managedProperties, query);
}
/**
* finds property by name (managed or withTransientAnn)
*
* @throws JaversException PROPERTY_NOT_FOUND
*/
JaversProperty getProperty(String withName) {
Validate.argumentIsNotNull(withName);
if (!propertiesByName.containsKey(withName)){
throw new JaversException(PROPERTY_NOT_FOUND, withName, baseJavaClass.getName());
}
return propertiesByName.get(withName);
}
/**
* @throws JaversException PROPERTY_NOT_FOUND
*/
List getProperties(List withNames) {
Validate.argumentIsNotNull(withNames);
return withNames.stream().map(n -> getProperty(n)).collect(Collectors.toList());
}
boolean hasProperty(String propertyName) {
return propertiesByName.containsKey(propertyName);
}
void forEachProperty(Consumer consumer) {
managedProperties.forEach(p -> consumer.accept(p));
}
Class getBaseJavaClass() {
return baseJavaClass;
}
}