SchemaFactory (Apache Calcite API)

All Known Implementing Classes:

AbstractSchema.Factory, CassandraSchemaFactory, CloneSchema.Factory, CsvSchemaFactory, DruidSchemaFactory, ElasticsearchSchemaFactory, FileSchemaFactory, GeodeSchemaFactory, GeodeSimpleSchemaFactory, JdbcSchema.Factory, MongoSchemaFactory, PigSchemaFactory, ReflectiveSchema.Factory, TpcdsSchemaFactory, TpchSchemaFactory
```
public interface SchemaFactory
```
Factory for Schema objects.
A schema factory allows you to include a custom schema in a model file. For example, here is a model that contains a custom schema whose tables read CSV files. (See the example CSV adapter for more details about this particular adapter.)
```
{
   "version": "1.0",
   "defaultSchema": "SALES",
   "schemas": [
     {
       "name": "SALES",
       "type": "custom",
       "factory": "org.apache.calcite.adapter.csv.CsvSchemaFactory",
       "mutable": true,
       "operand": {
         directory: "target/test-classes/sales"
       },
       "tables": [
         {
           "name": "FEMALE_EMPS",
           "type": "view",
           "sql": "SELECT * FROM emps WHERE gender = 'F'"
          }
       ]
     }
   ]
 }
```
If you do not wish to allow model authors to add additional tables (including views) to an instance of your schema, specify 'mutable: false'.
A class that implements SchemaFactory specified in a schema must have a public default constructor.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Schema`	`create(SchemaPlus parentSchema, java.lang.String name, java.util.Map<java.lang.String,java.lang.Object> operand)`	Creates a Schema.

Method Detail

create

Schema create(SchemaPlus parentSchema,
              java.lang.String name,
              java.util.Map<java.lang.String,java.lang.Object> operand)

Creates a Schema.

Parameters:: parentSchema - Parent schema; name - Name of this schema; operand - The "operand" JSON property
Returns:: Created schema