diff options
Diffstat (limited to 'query')
| -rw-r--r-- | query/README | 50 | ||||
| -rw-r--r-- | query/makefile | 5 |
2 files changed, 53 insertions, 2 deletions
diff --git a/query/README b/query/README new file mode 100644 index 0000000..6f6a858 --- /dev/null +++ b/query/README @@ -0,0 +1,50 @@ +This examples shows how to use the ODB Query Language to search the database +for persistent objects matching certain criteria. + +The example consists of the following files: + +person.hxx + Header file defining the 'person' persistent class. + +person-odb.hxx +person-odb.ixx +person-odb.cxx +person.sql + The first three files contain the database support code and the last file + contains the database schema for the person.hxx header. + + These files are generated by the ODB compiler from person.hxx using the + following command line: + + odb -d <database> --generate-query --generate-schema person.hxx + + Where <database> stands for the database system we are using, for example, + 'mysql'. + +database.hxx + Contains the create_database() function which instantiates the concrete + database class corresponding to the database system we are using. + +driver.cxx + Driver for the example. It includes the person.hxx and person-odb.hxx + headers to gain access to the 'person' class and the database support + code for this class. It also includes database.hxx for the + create_database() function declaration. + + In main() the driver first calls create_database() to obtain the database + instance. It then persists a number of 'person' objects in the database + and executes a number of queries to find objects matching various criteria. + +To run the example we first need to create the database schema. Using MySQL +as an example, this can be achieved with the following command: + +mysql --user=odb_test --database=odb_test < person.sql + +Here we use 'odb_test' as the database login and also 'odb_test' as the +database name. + +Once the database schema is ready, we can run the example (using MySQL as +the database): + +./driver --user odb_test --database odb_test + diff --git a/query/makefile b/query/makefile index 1445a00..c86a7cf 100644 --- a/query/makefile +++ b/query/makefile @@ -70,9 +70,10 @@ $(dist): sources := $(cxx_tun) $(dist): headers := $(odb_hdr) $(dist): export name := $(name) $(dist): export odb_header_stem := $(basename $(odb_hdr)) -$(dist): export extra_dist := $(call vc9projs,$(name)) $(call vc10projs,$(name)) +$(dist): export extra_dist := README $(call vc9projs,$(name)) \ +$(call vc10projs,$(name)) $(dist): - $(call dist-data,$(sources) $(headers) database.hxx) + $(call dist-data,$(sources) $(headers) README database.hxx) $(call meta-automake,../template/Makefile.am) $(call meta-vc9projs,../template/template,$(name)) $(call meta-vc10projs,../template/template,$(name)) |