Package org.apache.calcite.piglet

Class DynamicTupleRecordType

java.lang.Object

org.apache.calcite.rel.type.RelDataTypeImpl

org.apache.calcite.rel.type.DynamicRecordType

org.apache.calcite.rel.type.DynamicRecordTypeImpl

org.apache.calcite.piglet.DynamicTupleRecordType

All Implemented Interfaces:

RelDataType, RelDataTypeFamily

public class DynamicTupleRecordType
extends DynamicRecordTypeImpl

Represents Pig Tuples with unknown fields. The tuple field can only be accessed via name '$index', like ('$0', '$1'). The tuple is then resized to match the index.

Field Summary

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

DYNAMIC_STAR_PREFIX

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

digest, fieldList, NON_NULLABLE_SUFFIX

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

PRECISION_NOT_SPECIFIED, SCALE_NOT_SPECIFIED

Method Summary

Modifier and Type	Method	Description
RelDataTypeField	getField(String fieldName, boolean caseSensitive, boolean elideRecord)	Looks up a field by name.

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

generateTypeString, getFamily, getFieldCount, getFieldList, getFieldNames, getPrecedenceList, getSqlTypeName, isStruct

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

isDynamicStarColName, isDynamicStruct

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

computeDigest, equals, extra, getCharset, getCollation, getComparability, getComponentType, getFieldMap, getFullTypeString, getIntervalQualifier, getKeyType, getPrecision, getScale, getSqlIdentifier, getStructKind, getValueType, hashCode, isNullable, proto, proto, proto, proto, toString

Methods inherited from class java.lang.Object

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

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

equalsSansFieldNames

Method Details

getField

public RelDataTypeField getField(String fieldName,
 boolean caseSensitive,
 boolean elideRecord)

Description copied from interface: RelDataType

Looks up a field by name.

NOTE: Be careful choosing the value of caseSensitive:

• If the field name was supplied by an end-user (e.g. as a column alias in SQL), use your session's case-sensitivity setting.
• Only hard-code true if you are sure that the field name is internally generated.
• Hard-coding false is almost certainly wrong.

Specified by:

getField in interface RelDataType

Overrides:

getField in class DynamicRecordTypeImpl

Parameters:

fieldName - Name of field to find

caseSensitive - Whether match is case-sensitive

elideRecord - Whether to find fields nested within records

Returns:

named field, or null if not found