com.sap.cds.mtx.impl

Class MetaDataAccessorImpl<M>

java.lang.Object

com.sap.cds.mtx.impl.MetaDataAccessorImpl<M>

Type Parameters:

M - Type used for the Edmx model

All Implemented Interfaces:

MetaDataAccessor<M>

public class MetaDataAccessorImpl<M>
extends Object
implements MetaDataAccessor<M>

Class that provides access to CDS and Edmx models and caches them

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	MetaDataAccessorImpl.EdmxModelCreator<M>

Constructor Summary

Constructors

Constructor and Description
MetaDataAccessorImpl(SidecarAccess sidecarAccess, CacheParams cacheParams, MetaDataAccessorImpl.EdmxModelCreator<M> strToEdmx, com.google.common.base.Ticker cacheTicker)
MetaDataAccessorImpl(SidecarAccess sidecarAccess, CacheParams cacheParams, com.google.common.base.Ticker cacheTicker, BiFunction<String,String,M> strToEdmxFunction)

Method Summary

Modifier and Type	Method and Description
void	cacheActions(String tenantId, Consumer<String> cdsAction, Consumer<com.sap.cds.mtx.impl.MetaDataAccessorImpl.EdmxCacheKey> edmxAction)
void	evict(String tenantId)
CdsModel	getCdsModel(String tenantId) Returns a Cds model
M	getEdmx(String tenantId, String serviceName, String language) Returns an edmx model
void	refresh(String tenantId)

Methods inherited from class java.lang.Object

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

Constructor Detail

MetaDataAccessorImpl

public MetaDataAccessorImpl(SidecarAccess sidecarAccess,
                            CacheParams cacheParams,
                            MetaDataAccessorImpl.EdmxModelCreator<M> strToEdmx,
                            com.google.common.base.Ticker cacheTicker)

Parameters:

sidecarAccess - Object of type SidecarAccessthat provides access to the node.js application sidecar/mtx via a rest API

cacheParams - Parameters that control size and lifecycle of cache for cds and edmx models

strToEdmx - Function that converts an edmx model description given as string into an edmx model

cacheTicker - Optional ticker used by guava cache for testing purposes, use null for productive use

MetaDataAccessorImpl

public MetaDataAccessorImpl(SidecarAccess sidecarAccess,
                            CacheParams cacheParams,
                            com.google.common.base.Ticker cacheTicker,
                            BiFunction<String,String,M> strToEdmxFunction)

Parameters:

sidecarAccess - Object of type SidecarAccessthat provides access to the node.js application sidecar/mtx via a rest API

cacheParams - Parameters that control size and lifecycle of cache for cds and edmx models

strToEdmxFunction - BiFunction that converts an edmx model description given as string into an edmx model.Parameters are edmx model as string and service name

cacheTicker - Optional ticker used by guava cache for testing purposes, use null for productive use

Method Detail

getEdmx

public M getEdmx(String tenantId,
                 String serviceName,
                 String language)
          throws CdsException

Returns an edmx model

Specified by:

getEdmx in interface MetaDataAccessor<M>

Parameters:

tenantId - tenant identifier, must not be null

serviceName - service name, can be null

language - language, can be null

Returns:

the edmx model for tenant, service name and language

Throws:

CdsException

getCdsModel

public CdsModel getCdsModel(String tenantId)
                     throws CdsException

Returns a Cds model

Specified by:

getCdsModel in interface MetaDataAccessor<M>

Parameters:

tenantId - tenant id, mustn't be null

Returns:

the CdsModel for the specified tenant

Throws:

CdsException

refresh

public void refresh(String tenantId)

Specified by:

refresh in interface MetaDataAccessor<M>

evict

public void evict(String tenantId)

Specified by:

evict in interface MetaDataAccessor<M>

cacheActions

public void cacheActions(String tenantId,
                         Consumer<String> cdsAction,
                         Consumer<com.sap.cds.mtx.impl.MetaDataAccessorImpl.EdmxCacheKey> edmxAction)