com.impetus.kundera.utils

Class KunderaCoreUtils

java.lang.Object

com.impetus.kundera.utils.KunderaCoreUtils

public class KunderaCoreUtils
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
private static String	COMPOSITE_KEY_SEPERATOR
private static org.slf4j.Logger	logger The logger.
private static String	LUCENE_COMPOSITE_KEY_SEPERATOR

Constructor Summary

Constructors

Constructor and Description
KunderaCoreUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static int	countNonSyntheticFields(Class<?> clazz)
static Object	createNewInstance(Class clazz)
private static Map<String,Object>	fetchPropertyMap(Map<String,Object> puProperty)
static Object	getEntity(Object e)
static Map<String,Object>	getExternalProperties(String pu, Map<String,Object> externalProperties, String... persistenceUnits) Retrun map of external properties for given pu;
static String	getJPAColumnName(String field, EntityMetadata entityMetadata, MetamodelImpl metaModel) Gets the JPA column name.
static String	getLuceneQueryFromJPAQuery(KunderaQuery kunderaQuery, EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata) Gets the lucene query from jpa query.
private static String	getPropertyName(EntityMetadata metadata, String property, EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata)
private static Class	getValueType(javax.persistence.metamodel.EntityType entity, String fieldName)
static Object	initialize(Class clazz, Object record) Initialize.
static Object	initialize(EntityMetadata m, Object entity, Object id) Initialize.
private static void	isCompletePartitionKeyPresentInQuery(Queue filterQueue, MetamodelImpl metaModel, EntityMetadata metadata) cheking whether all the fields of partition key are present in the jpa query
static boolean	isEmptyOrNull(Object o)
static boolean	isShowQueryEnabled(Map<String,Object> properties, String persistenceUnit, EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata)
private static void	populateEmbeddedIdFields(Set<javax.persistence.metamodel.Attribute> embeddedAttributes, MetamodelImpl metaModel, Set<String> embeddedIdFields) recursively populate all the fields present in partition key
private static void	populateEmbeddedIdFieldsUtil(Set<javax.persistence.metamodel.Attribute> embeddedAttributes, MetamodelImpl metaModel, Set<String> embeddedIdFields)
static String	prepareCompositeKey(EntityMetadata m, Object compositeKey) Prepares composite key .
static String	prepareCompositeKey(javax.persistence.metamodel.SingularAttribute attribute, MetamodelImpl metaModel, Object compositeKey) Prepares composite key as a lucene key.
private static void	prepareLuceneQueryForPartitionKey(LuceneQueryBuilder queryBuilder, Object key, MetamodelImpl metaModel, String indexName, Class valueClazz)
static void	printQuery(String query, boolean showQuery)
static void	printQueryWithFilterClause(Queue filterClausequeue, String tableName)
static String	resolvePath(String input) Resolves variable in path given as string

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COMPOSITE_KEY_SEPERATOR

private static final String COMPOSITE_KEY_SEPERATOR

See Also:

Constant Field Values

LUCENE_COMPOSITE_KEY_SEPERATOR

private static final String LUCENE_COMPOSITE_KEY_SEPERATOR

See Also:

Constant Field Values

logger

private static org.slf4j.Logger logger

The logger.

Constructor Detail

KunderaCoreUtils

public KunderaCoreUtils()

Method Detail

getExternalProperties

public static Map<String,Object> getExternalProperties(String pu,
                                       Map<String,Object> externalProperties,
                                       String... persistenceUnits)

Retrun map of external properties for given pu;

Parameters:

pu -

externalProperties -

persistenceUnits -

Returns:

fetchPropertyMap

private static Map<String,Object> fetchPropertyMap(Map<String,Object> puProperty)

Parameters:

puProperty -

Returns:

isEmptyOrNull

public static boolean isEmptyOrNull(Object o)

prepareCompositeKey

public static String prepareCompositeKey(EntityMetadata m,
                         Object compositeKey)

Prepares composite key .

Parameters:

m - entity metadata

compositeKey - composite key instance

Returns:

redis key

prepareCompositeKey

public static String prepareCompositeKey(javax.persistence.metamodel.SingularAttribute attribute,
                         MetamodelImpl metaModel,
                         Object compositeKey)

Prepares composite key as a lucene key.

Parameters:

m - entity metadata

metaModel - meta model.

compositeKey - composite key instance

Returns:

redis key

resolvePath

public static String resolvePath(String input)

Resolves variable in path given as string

Parameters:

input - String input url Code inspired by :http://stackoverflow.com/questions/2263929/ regarding-application-properties-file-and-environment-variable

countNonSyntheticFields

public static int countNonSyntheticFields(Class<?> clazz)

getLuceneQueryFromJPAQuery

public static String getLuceneQueryFromJPAQuery(KunderaQuery kunderaQuery,
                                EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata)

Gets the lucene query from jpa query.

Returns:

the lucene query from jpa query

isCompletePartitionKeyPresentInQuery

private static void isCompletePartitionKeyPresentInQuery(Queue filterQueue,
                                        MetamodelImpl metaModel,
                                        EntityMetadata metadata)

cheking whether all the fields of partition key are present in the jpa query

Parameters:

filterQueue -

metaModel -

metadata -

populateEmbeddedIdFields

private static void populateEmbeddedIdFields(Set<javax.persistence.metamodel.Attribute> embeddedAttributes,
                            MetamodelImpl metaModel,
                            Set<String> embeddedIdFields)

recursively populate all the fields present in partition key

Parameters:

embeddedAttributes -

metaModel -

embeddedIdFields -

populateEmbeddedIdFieldsUtil

private static void populateEmbeddedIdFieldsUtil(Set<javax.persistence.metamodel.Attribute> embeddedAttributes,
                                MetamodelImpl metaModel,
                                Set<String> embeddedIdFields)

prepareLuceneQueryForPartitionKey

private static void prepareLuceneQueryForPartitionKey(LuceneQueryBuilder queryBuilder,
                                     Object key,
                                     MetamodelImpl metaModel,
                                     String indexName,
                                     Class valueClazz)

getValueType

private static Class getValueType(javax.persistence.metamodel.EntityType entity,
                 String fieldName)

getPropertyName

private static String getPropertyName(EntityMetadata metadata,
                     String property,
                     EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata)

isShowQueryEnabled

public static boolean isShowQueryEnabled(Map<String,Object> properties,
                         String persistenceUnit,
                         EntityManagerFactoryImpl.KunderaMetadata kunderaMetadata)

printQuery

public static void printQuery(String query,
              boolean showQuery)

printQueryWithFilterClause

public static void printQueryWithFilterClause(Queue filterClausequeue,
                              String tableName)

getEntity

public static Object getEntity(Object e)

initialize

public static Object initialize(EntityMetadata m,
                Object entity,
                Object id)

Initialize.

Parameters:

tr - the tr

m - the m

entity - the entity

tr -

Returns:

the object

Throws:

InstantiationException - the instantiation exception

IllegalAccessException - the illegal access exception

initialize

public static Object initialize(Class clazz,
                Object record)

Initialize.

Parameters:

tr - the tr

m - the m

entity - the entity

tr -

Returns:

the object

Throws:

InstantiationException - the instantiation exception

IllegalAccessException - the illegal access exception

createNewInstance

public static Object createNewInstance(Class clazz)

Parameters:

clazz -

Returns:

getJPAColumnName

public static String getJPAColumnName(String field,
                      EntityMetadata entityMetadata,
                      MetamodelImpl metaModel)

Gets the JPA column name.

Parameters:

field - the field

entityMetadata - the entity metadata

metaModel - the meta model

Returns:

the JPA column name