AbstractQueryableTable (Apache Calcite API)

java.lang.Object
- org.apache.calcite.schema.impl.AbstractTable
- - org.apache.calcite.adapter.java.AbstractQueryableTable

All Implemented Interfaces:

QueryableTable, Table, Wrapper

Direct Known Subclasses:

ArrayTable, CalciteMetaImpl.MetadataTable, CassandraTable, ElasticsearchTable, FileTable, GeodeTable, JdbcTable, ListTable, MongoTable, ReflectiveSchema.ReflectiveTable, SplunkTable, TpcdsSchema.TpcdsQueryableTable, TpchSchema.TpchQueryableTable, ViewTable
```
public abstract class AbstractQueryableTable
extends AbstractTable
implements QueryableTable
```
Abstract base class for implementing Table.

Field Summary

Fields
Modifier and Type Field Description

protected java.lang.reflect.Type elementType

Constructor Summary

Constructors
Modifier Constructor Description

protected AbstractQueryableTable(java.lang.reflect.Type elementType)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.reflect.Type`	`getElementType()`	Returns the element type of the collection that will implement this table.
`Expression`	`getExpression(SchemaPlus schema, java.lang.String tableName, java.lang.Class clazz)`	Generates an expression with which this table can be referenced in generated code.

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable
getJdbcTableType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg, unwrap

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.calcite.schema.QueryableTable
asQueryable

Methods inherited from interface org.apache.calcite.schema.Table
getJdbcTableType, getRowType, getStatistic, isRolledUp, rolledUpColumnValidInsideAgg

- Field Detail
  - elementType
```
protected final java.lang.reflect.Type elementType
```
- Constructor Detail
  - AbstractQueryableTable
```
protected AbstractQueryableTable(java.lang.reflect.Type elementType)
```
- Method Detail
  - getElementType
```
public java.lang.reflect.Type getElementType()
```
    Description copied from interface: QueryableTable
    
    Returns the element type of the collection that will implement this table.
    
    Specified by:
    
    getElementType in interface QueryableTable
  - getExpression
```
public Expression getExpression(SchemaPlus schema,
                                java.lang.String tableName,
                                java.lang.Class clazz)
```
    Description copied from interface: QueryableTable
    
    Generates an expression with which this table can be referenced in generated code.
    
    Specified by:
    
    getExpression in interface QueryableTable
    
    Parameters:
    
    schema - Schema
    
    tableName - Table name (unique within schema)
    
    clazz - The desired collection class; for example Queryable.