com.sap.conn.jco

Interface JCoRepository

All Known Subinterfaces:

JCoCustomRepository

public interface JCoRepository

The meta data repositories are needed to get the technical description of functions and parameters used for fulfilling RFC calls. This interface covers the implementation of basic repository functionality such as caching and the persistence of meta data. The JCoCustomRepository serves as a base interface for more elaborate repositories.
To fetch the meta data at runtime from a backend system use the JCoRepository instance returned by a JCoDestination. Keep in mind, that the functions and parameter definitions are always the same inside of one cluster of SAP application server hosts, but can differ from other clusters.

See Also:

JCoCustomRepository

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Clear allows to empty both the function template cache as well as the record metadata cache completely.
String[]	getCachedClassMetaDataNames() Returns the names of the cached classes as a string array.
String[]	getCachedFunctionTemplateNames() Returns the names of the cached functions as a string array.
String[]	getCachedRecordMetaDataNames() Returns the names of the cached structures as a string array.
JCoClassMetaData	getClassMetaData(String className) Returns the meta data for the passed class/interface name.
JCoFunction	getFunction(String functionName) Returns a JCoFunction with initial parameters for the passed function name.
JCoListMetaData	getFunctionInterface(String functionName) Returns the meta data for the passed function.
JCoFunctionTemplate	getFunctionTemplate(String functionName) Returns the template for the passed function.
JCoRepositoryMonitor	getMonitor() Returns a new created or available monitor instance for the repository.
String	getName() Returns the repository name.
JCoRecordMetaData	getRecordMetaData(String recordName) Returns the meta data for the passed structure/table name.
JCoRequest	getRequest(String functionName) Returns a JCoRequest with initial parameters for the passed function name.
JCoRecordMetaData	getStructureDefinition(String structureName) Returns the meta data for the passed structure/table name.
boolean	isUnicode() Returns whether the repository contains both Unicode and Non-Unicode metadata.
void	load(Reader reader) Loads the repository from the given reader.
void	removeClassMetaDataFromCache(String className) Removes a class meta data instance from the local cache.
void	removeFunctionTemplateFromCache(String functionName) Removes a function template from the local cache.
void	removeRecordMetaDataFromCache(String recordName) Removes a record meta data from the local cache.
void	save(Writer writer) Saves this repository using the given writer. This method does not close the given writer.

Method Detail

getName

String getName()

Returns the repository name.

Returns:

the name of the repository

getFunctionTemplate

JCoFunctionTemplate getFunctionTemplate(String functionName)
                                        throws JCoException

Returns the template for the passed function.

Parameters:

functionName - the name of the function for which the template is being returned.

Returns:

the template for the function or null if the function template could not be retrieved.

Throws:

JCoException - if another error occurred during the retrieval of the function interface with the group field set appropiately.

getFunction

JCoFunction getFunction(String functionName)
                        throws JCoException

Returns a JCoFunction with initial parameters for the passed function name.

Parameters:

functionName - the name of the function for which the JCoFunction is being returned.

Returns:

the JCoFunction for the function name or null if the underlying function template could not be retrieved.

Throws:

JCoException - if another error occurred during the retrieval of the function interface with the group field set appropiately.

getRequest

JCoRequest getRequest(String functionName)
                      throws JCoException

Returns a JCoRequest with initial parameters for the passed function name.

Parameters:

functionName - the name of the function for which the request is being returned.

Returns:

the request for the function name or null if the underlying function template could not be retrieved.

Throws:

JCoException - if another error occurred during the retrieval of the function interface with the group field set appropiately.

getFunctionInterface

JCoListMetaData getFunctionInterface(String functionName)
                                     throws JCoException

Returns the meta data for the passed function.

Parameters:

functionName - the name of the function for which the meta data is being returned

Returns:

the meta data for the function or null if the function couldn't be found

Throws:

JCoException - if an error occurred during the retrieval of the function interface.

getRecordMetaData

JCoRecordMetaData getRecordMetaData(String recordName)
                                    throws JCoException

Returns the meta data for the passed structure/table name.

Parameters:

recordName - the name of the structure or table for which the meta data is being returned

Returns:

the meta data for the given name or null if the structure couldn't be found

Throws:

JCoException - if an error occurred during the retrieval of the data structure definition.

getStructureDefinition

JCoRecordMetaData getStructureDefinition(String structureName)
                                         throws JCoException

Returns the meta data for the passed structure/table name.

Parameters:

structureName - the name of the structure or table for which the meta data is being returned

Returns:

the meta data for the given name or null if the structure couldn't be found

Throws:

JCoException - if an error occurred during the retrieval of the data structure definition.

getClassMetaData

JCoClassMetaData getClassMetaData(String className)
                                  throws JCoException

Returns the meta data for the passed class/interface name.

Parameters:

className - the name of the class or interface for which the meta data is being returned

Returns:

the meta data for the given name or null if the class couldn't be found

Throws:

JCoException - if an error occurred during the retrieval

removeFunctionTemplateFromCache

void removeFunctionTemplateFromCache(String functionName)

Removes a function template from the local cache.

Parameters:

functionName - the name of the function to be removed from the cache

removeRecordMetaDataFromCache

void removeRecordMetaDataFromCache(String recordName)

Removes a record meta data from the local cache.

Parameters:

recordName - the name of the structure to be removed from the cache

removeClassMetaDataFromCache

void removeClassMetaDataFromCache(String className)

Removes a class meta data instance from the local cache.

Parameters:

className - the name of the class to be removed from the cache

getCachedFunctionTemplateNames

String[] getCachedFunctionTemplateNames()

Returns the names of the cached functions as a string array.

Returns:

a string array of the cached functions (length 0 if the cache is empty)

getCachedRecordMetaDataNames

String[] getCachedRecordMetaDataNames()

Returns the names of the cached structures as a string array.

Returns:

a string array of the cached structures (length 0 if the cache is empty)

getCachedClassMetaDataNames

String[] getCachedClassMetaDataNames()

Returns the names of the cached classes as a string array.

Returns:

a string array of the cached classes (length 0 if the cache is empty)

isUnicode

boolean isUnicode()

Returns whether the repository contains both Unicode and Non-Unicode metadata. Repositories containing meta data for SAP systems running on Non-Unicode codepages cannot contain meta data for unicode structures.

Returns:

true, if the repository contains the metadata for Unicode representation of the contained metadata, false otherwise

clear

void clear()

Clear allows to empty both the function template cache as well as the record metadata cache completely. All metadata will be looked up again in the original source, which is generally much more expensive than looking it up in the cache. Therefore use this method carefully and avoid it in application code.

getMonitor

JCoRepositoryMonitor getMonitor()

Returns a new created or available monitor instance for the repository.

Returns:

JCoRepositoryMonitor instance

load

void load(Reader reader)
          throws IOException

Loads the repository from the given reader. Note that the existing cache is cleared completely before reading. That is, after successful completion of the load operation this repository's cache contains only the meta data read. In case of an error the cache will be empty.
This method does not close the given reader. Obsolete trailing characters are ignored and remain available for further reading.

Parameters:

reader - the reader to be used for loading this repository

Throws:

IOException - if an I/O error occurs

JCoRuntimeException - with key JCO_ERROR_REPOSITORY_SERIALIZATION if the data read is syntactically or semantically incorrect

Since:

3.0.10

save

void save(Writer writer)
          throws IOException

Saves this repository using the given writer.
This method does not close the given writer.

Parameters:

writer - the writer used to save this repository

Throws:

IOException - if an I/O error occurs

Since:

3.0.10