Package org.apache.calcite.adapter.geode.rel

Class GeodeFilter.Translator

java.lang.Object

org.apache.calcite.adapter.geode.rel.GeodeFilter.Translator

Enclosing class:

GeodeFilter

static class GeodeFilter.Translator
extends java.lang.Object

Translates RexNode expressions into Geode expression strings.

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.List<java.lang.String>	fieldNames
private RelDataType	rowType

Constructor Summary

Constructors

Constructor	Description
Translator(RelDataType rowType)

Method Summary

Modifier and Type	Method	Description
private java.util.List<RexNode>	getLeftNodeDisjunctions(RexNode node, java.util.List<RexNode> disjunctions)
private java.lang.String	getLeftNodeFieldName(RexNode left)	Get the field name for the left node to use for IN SET query
private java.lang.String	getLeftNodeFieldNameForNode(RexNode node)
private static java.lang.String	literalValue(RexLiteral literal)	Converts the value of a literal to a string.
private java.lang.String	quoteCharLiteral(RexLiteral literal)
private java.lang.String	translateAnd(RexNode condition)	Translate a conjunctive predicate to a OQL string.
private java.lang.String	translateBinary(java.lang.String op, java.lang.String rop, RexCall call)	Translates a call to a binary operator, reversing arguments if necessary.
private java.lang.String	translateBinary2(java.lang.String op, RexNode left, RexNode right)	Translates a call to a binary operator.
private java.lang.String	translateInSet(java.util.List<RexNode> disjunctions)	Creates OQL IN SET predicate string
private java.lang.String	translateMatch(RexNode condition)	Produce the OQL predicate string for the given condition.
private java.lang.String	translateMatch2(RexNode node)	Translate a binary relation.
private java.lang.String	translateOp2(java.lang.String op, java.lang.String name, RexLiteral right)	Combines a field name, operator, and literal to produce a predicate string.
private java.lang.String	translateOr(java.util.List<RexNode> disjunctions)
private boolean	useInSetQueryClause(java.util.List<RexNode> disjunctions)	Check if we can use IN SET Query clause to improve query performance

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

rowType

private final RelDataType rowType

fieldNames

private final java.util.List<java.lang.String> fieldNames

Constructor Detail

Translator

Translator(RelDataType rowType)

Method Detail

literalValue

private static java.lang.String literalValue(RexLiteral literal)

Converts the value of a literal to a string.

Parameters:

literal - Literal to translate

Returns:

String representation of the literal

translateMatch

private java.lang.String translateMatch(RexNode condition)

Produce the OQL predicate string for the given condition.

Parameters:

condition - Condition to translate

Returns:

OQL predicate string

translateAnd

private java.lang.String translateAnd(RexNode condition)

Translate a conjunctive predicate to a OQL string.

Parameters:

condition - A conjunctive predicate

Returns:

OQL string for the predicate

getLeftNodeFieldName

private java.lang.String getLeftNodeFieldName(RexNode left)

Get the field name for the left node to use for IN SET query

useInSetQueryClause

private boolean useInSetQueryClause(java.util.List<RexNode> disjunctions)

Check if we can use IN SET Query clause to improve query performance

translateInSet

private java.lang.String translateInSet(java.util.List<RexNode> disjunctions)

Creates OQL IN SET predicate string

getLeftNodeFieldNameForNode

private java.lang.String getLeftNodeFieldNameForNode(RexNode node)

getLeftNodeDisjunctions

private java.util.List<RexNode> getLeftNodeDisjunctions(RexNode node,
                                                        java.util.List<RexNode> disjunctions)

translateOr

private java.lang.String translateOr(java.util.List<RexNode> disjunctions)

translateMatch2

private java.lang.String translateMatch2(RexNode node)

Translate a binary relation.

translateBinary

private java.lang.String translateBinary(java.lang.String op,
                                         java.lang.String rop,
                                         RexCall call)

Translates a call to a binary operator, reversing arguments if necessary.

translateBinary2

private java.lang.String translateBinary2(java.lang.String op,
                                          RexNode left,
                                          RexNode right)

Translates a call to a binary operator. Returns null on failure.

quoteCharLiteral

private java.lang.String quoteCharLiteral(RexLiteral literal)

translateOp2

private java.lang.String translateOp2(java.lang.String op,
                                      java.lang.String name,
                                      RexLiteral right)

Combines a field name, operator, and literal to produce a predicate string.