org.apache.flink.table.planner.functions.sql

Class BuiltInSqlFunction

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlFunction

org.apache.flink.table.planner.functions.sql.BuiltInSqlFunction

All Implemented Interfaces:

BuiltInSqlOperator

Direct Known Subclasses:

MatchRowTimeFunction, SqlTryCastFunction

@Internal
public class BuiltInSqlFunction
extends org.apache.calcite.sql.SqlFunction
implements BuiltInSqlOperator

SQL version of BuiltInFunctionDefinition in cases where BridgingSqlFunction does not apply. This is the case when the operator has a special parsing syntax or uses other Calcite-specific features that are not exposed via BuiltInFunctionDefinition yet.

Note: Try to keep usages of this class to a minimum and use Flink's BuiltInFunctionDefinition stack instead.

For simple functions, use the provided builder. Otherwise, this class can also be extended.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BuiltInSqlFunction.Builder Builder for fluent definition of built-in functions.

Field Summary

Fields inherited from class org.apache.calcite.sql.SqlOperator

kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BuiltInSqlFunction(String name, int version, org.apache.calcite.sql.SqlKind kind, org.apache.calcite.sql.type.SqlReturnTypeInference returnTypeInference, org.apache.calcite.sql.type.SqlOperandTypeInference operandTypeInference, org.apache.calcite.sql.type.SqlOperandTypeChecker operandTypeChecker, org.apache.calcite.sql.SqlFunctionCategory category, boolean isDeterministic, boolean isInternal, java.util.function.Function<org.apache.calcite.sql.SqlOperatorBinding,org.apache.calcite.sql.validate.SqlMonotonicity> monotonicity)
protected	BuiltInSqlFunction(String name, org.apache.calcite.sql.SqlKind kind, org.apache.calcite.sql.type.SqlReturnTypeInference returnTypeInference, org.apache.calcite.sql.type.SqlOperandTypeInference operandTypeInference, org.apache.calcite.sql.type.SqlOperandTypeChecker operandTypeChecker, org.apache.calcite.sql.SqlFunctionCategory category)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.sql.validate.SqlMonotonicity	getMonotonicity(org.apache.calcite.sql.SqlOperatorBinding call)
String	getQualifiedName()
Optional<Integer>	getVersion()
boolean	isDeterministic()
boolean	isInternal()
static BuiltInSqlFunction.Builder	newBuilder() Builder for configuring and creating instances of BuiltInSqlFunction.

Methods inherited from class org.apache.calcite.sql.SqlFunction

deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, getSyntax, isQuantifierAllowed, unparse, validateCall, validateQuantifier

Methods inherited from class org.apache.calcite.sql.SqlOperator

acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSymmetrical, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.planner.functions.sql.BuiltInSqlOperator

extractNameFromQualifiedName, toQualifiedName, unwrapIsInternal, unwrapVersion

Constructor Detail

BuiltInSqlFunction

protected BuiltInSqlFunction(String name,
                             int version,
                             org.apache.calcite.sql.SqlKind kind,
                             @Nullable
                             org.apache.calcite.sql.type.SqlReturnTypeInference returnTypeInference,
                             @Nullable
                             org.apache.calcite.sql.type.SqlOperandTypeInference operandTypeInference,
                             @Nullable
                             org.apache.calcite.sql.type.SqlOperandTypeChecker operandTypeChecker,
                             org.apache.calcite.sql.SqlFunctionCategory category,
                             boolean isDeterministic,
                             boolean isInternal,
                             java.util.function.Function<org.apache.calcite.sql.SqlOperatorBinding,org.apache.calcite.sql.validate.SqlMonotonicity> monotonicity)

BuiltInSqlFunction

protected BuiltInSqlFunction(String name,
                             org.apache.calcite.sql.SqlKind kind,
                             org.apache.calcite.sql.type.SqlReturnTypeInference returnTypeInference,
                             org.apache.calcite.sql.type.SqlOperandTypeInference operandTypeInference,
                             @Nullable
                             org.apache.calcite.sql.type.SqlOperandTypeChecker operandTypeChecker,
                             org.apache.calcite.sql.SqlFunctionCategory category)

Method Detail

newBuilder

public static BuiltInSqlFunction.Builder newBuilder()

Builder for configuring and creating instances of BuiltInSqlFunction.

getVersion

public final Optional<Integer> getVersion()

Specified by:

getVersion in interface BuiltInSqlOperator

See Also:

BuiltInFunctionDefinition.getVersion()

getQualifiedName

public String getQualifiedName()

Specified by:

getQualifiedName in interface BuiltInSqlOperator

See Also:

BuiltInFunctionDefinition.getQualifiedName()

isDeterministic

public boolean isDeterministic()

Overrides:

isDeterministic in class org.apache.calcite.sql.SqlOperator

isInternal

public final boolean isInternal()

Specified by:

isInternal in interface BuiltInSqlOperator

See Also:

BuiltInFunctionDefinition.isInternal()

getMonotonicity

public org.apache.calcite.sql.validate.SqlMonotonicity getMonotonicity(org.apache.calcite.sql.SqlOperatorBinding call)

Overrides:

getMonotonicity in class org.apache.calcite.sql.SqlOperator