org.openepics.cable.services

Class HistoryService

java.lang.Object

org.openepics.cable.services.HistoryService

public class HistoryService
extends Object

HistoryService is the service layer that handles history operations.

Author:

Sunil Sah

Field Summary

Fields

Modifier and Type	Field and Description
static String	DIFF_CHANGE_EXPLANATION
static String	EMPTY_STRING

Constructor Summary

Constructors

Constructor and Description
HistoryService()

Method Summary

Modifier and Type	Method and Description
void	createHistoryEntry(EntityTypeOperation operation, String entityName, EntityType entityType, Long entityId, String entry, String validityEntry, String userId) Creates new history entry.
protected String	escapeDbString(String dbString) Escapes the characters that have a special meaning in the database LIKE query, '%' and '_'.
static String	getDiffForAttributes(String attrName, Object value, Object oldValue) Returns string with difference between two attribute values.
History	getHistoryById(Long id) Retrieves and returns history with specified id.
LazyService<History>	getLazyService()
long	getRowCount(Map<String,Object> filters) Return the number of elements in the table.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_STRING

public static final String EMPTY_STRING

See Also:

Constant Field Values

DIFF_CHANGE_EXPLANATION

public static final String DIFF_CHANGE_EXPLANATION

See Also:

Constant Field Values

Constructor Detail

HistoryService

public HistoryService()

Method Detail

getLazyService

public LazyService<History> getLazyService()

getHistoryById

public History getHistoryById(Long id)

Retrieves and returns history with specified id.

Parameters:

id - history id

Returns:

history with specified id.

createHistoryEntry

public void createHistoryEntry(EntityTypeOperation operation,
                               String entityName,
                               EntityType entityType,
                               Long entityId,
                               String entry,
                               String validityEntry,
                               String userId)

Creates new history entry.

Parameters:

operation - entity operation

entityName - entity name

entityType - entity type

entityId - entity id

entry - history entry

validityEntry - history entry for validity

userId - username of the user making the change.

getRowCount

public long getRowCount(@Nullable
                        Map<String,Object> filters)

Return the number of elements in the table.

Parameters:

filters - map of filters

Returns:

the number of elements in the table

escapeDbString

protected String escapeDbString(String dbString)

Escapes the characters that have a special meaning in the database LIKE query, '%' and '_'.

Parameters:

dbString - the string to escape

Returns:

the escaped string

getDiffForAttributes

public static String getDiffForAttributes(String attrName,
                                          Object value,
                                          Object oldValue)

Returns string with difference between two attribute values.

Parameters:

attrName - attribute name

value - new attribute value

oldValue - old attribute value

Returns:

string with difference between two attribute values.