Initializing the Cache
After you set up the index or indices, call jdeCacheInit, jdeCacheInitEx, jdeCacheInitMultipleIndex, or jdeCacheInitMultipleIndexEx. to initialize (create) the cache. Pass a unique cache name so that JDECACHE can identify the cache. Pass the index to this API so that the JDECACHE knows how to reference the data that will be stored in the cache. Because each cache must be associated with a user, you must also pass the user handle obtained from the call to JDB_InitUser. This API returns an HCACHE handle to the cache that JDECACHE creates. This handle appears in every subsequent JDECACHE API to identify the cache.
The keys in the index must be identical for every jdeCacheInit, jdeCacheInitEx, jdeCacheInitMultipleIndex, and jdeCacheInitMultipleIndexEx call for that cache until it is terminated. The keys in the index must correspond in number, order, and type for that index each time that it is used.
After the cache has been initialized successfully, JDECACHE operations can take place using the JDECACHE APIs. The cache handle obtained from jdeCacheInit or jdeCacheInitEx must be passed for every JDECACHE operation. JDECACHE makes an internal Index Definition Structure that accesses the cache when it is populated.