org.apache.calcite.rel.type

Class DynamicRecordType

java.lang.Object

org.apache.calcite.rel.type.RelDataTypeImpl

org.apache.calcite.rel.type.DynamicRecordType

All Implemented Interfaces:

RelDataType, RelDataTypeFamily

Direct Known Subclasses:

DynamicRecordTypeImpl

public abstract class DynamicRecordType
extends RelDataTypeImpl

Specific type of RelRecordType that corresponds to a dynamic table, where columns are created as they are requested.

Field Summary

Fields

Modifier and Type	Field and Description
static String	DYNAMIC_STAR_PREFIX

Fields inherited from class org.apache.calcite.rel.type.RelDataTypeImpl

digest, fieldList

Fields inherited from interface org.apache.calcite.rel.type.RelDataType

PRECISION_NOT_SPECIFIED, SCALE_NOT_SPECIFIED

Constructor Summary

Constructors

Constructor and Description
DynamicRecordType()

Method Summary

Modifier and Type	Method and Description
static boolean	isDynamicStarColName(String name) Returns true if the column name starts with DYNAMIC_STAR_PREFIX.
boolean	isDynamicStruct()

Methods inherited from class org.apache.calcite.rel.type.RelDataTypeImpl

computeDigest, equals, extra, generateTypeString, getCharset, getCollation, getComparability, getComponentType, getFamily, getField, getFieldCount, getFieldList, getFieldNames, getFullTypeString, getIntervalQualifier, getKeyType, getPrecedenceList, getPrecision, getScale, getSqlIdentifier, getSqlTypeName, getStructKind, getValueType, hashCode, isNullable, isStruct, proto, proto, proto, proto, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

DYNAMIC_STAR_PREFIX

public static final String DYNAMIC_STAR_PREFIX

See Also:

Constant Field Values

Constructor Detail

DynamicRecordType

public DynamicRecordType()

Method Detail

isDynamicStruct

public boolean isDynamicStruct()

Specified by:

isDynamicStruct in interface RelDataType

Overrides:

isDynamicStruct in class RelDataTypeImpl

Returns:

whether it has dynamic structure (for "schema-on-read" table)

isDynamicStarColName

public static boolean isDynamicStarColName(String name)

Returns true if the column name starts with DYNAMIC_STAR_PREFIX.