Package org.apache.calcite.sql.fun

Class SqlOverlapsOperator

java.lang.Object

org.apache.calcite.sql.SqlOperator

org.apache.calcite.sql.SqlBinaryOperator

org.apache.calcite.sql.fun.SqlOverlapsOperator

public class SqlOverlapsOperator
extends SqlBinaryOperator

SqlOverlapsOperator represents the SQL:1999 standard OVERLAPS function. Determines whether two anchored time intervals overlap.

Field Summary

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

kind, MDX_PRECEDENCE, NL

Method Summary

Modifier and Type	Method	Description
boolean	checkOperandTypes(SqlCallBinding callBinding, boolean throwOnFailure)	Checks that the operand values in a SqlCall to this operator are valid.
String	getAllowedSignatures(String opName)	Returns a string describing the expected operand types of a call, e.g.
SqlOperandCountRange	getOperandCountRange()	Returns a constraint on the number of operands expected by this operator.
@Nullable String	getSignatureTemplate(int operandsCount)	Returns a template describing how the operator signature is to be built.
void	unparse(SqlWriter writer, SqlCall call, int leftPrec, int rightPrec)	Writes a SQL representation of a call to this operator to a writer, including parentheses if the operators on either side are of greater precedence.

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

adjustType, deriveType, getMonotonicity, getSyntax, reverse, validRexOperands

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

acceptCall, acceptCall, allowsFraming, argumentMustBeScalar, checkOperandCount, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, createCall, createCall, createCall, deriveOperandType, equals, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getName, getNameAsId, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSqlCallFactory, getStrongPolicyInference, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isDynamicFunction, isGroup, isGroupAuxiliary, isName, isSafeOperator, isSymmetrical, leftPrec, not, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateCall, validateOperands

Methods inherited from class java.lang.Object

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

Method Details

unparse

public void unparse(SqlWriter writer,
 SqlCall call,
 int leftPrec,
 int rightPrec)

Description copied from class: SqlOperator

Writes a SQL representation of a call to this operator to a writer, including parentheses if the operators on either side are of greater precedence.

The default implementation of this method delegates to SqlSyntax.unparse(org.apache.calcite.sql.SqlWriter, org.apache.calcite.sql.SqlOperator, org.apache.calcite.sql.SqlCall, int, int).

Overrides:

unparse in class SqlOperator

getOperandCountRange

public SqlOperandCountRange getOperandCountRange()

Description copied from class: SqlOperator

Returns a constraint on the number of operands expected by this operator. Subclasses may override this method; when they don't, the range is derived from the SqlOperandTypeChecker associated with this operator.

Overrides:

getOperandCountRange in class SqlOperator

Returns:

acceptable range

getSignatureTemplate

public @Nullable String getSignatureTemplate(int operandsCount)

Returns a template describing how the operator signature is to be built.

Overrides:

getSignatureTemplate in class SqlBinaryOperator

Parameters:

operandsCount - is used with functions that can take a variable number of operands

Returns:

signature template, where {0} is the operator name and {1}, {2}, etc are operands

getAllowedSignatures

public String getAllowedSignatures(String opName)

Description copied from class: SqlOperator

Returns a string describing the expected operand types of a call, e.g. "SUBSTRING(VARCHAR, INTEGER, INTEGER)" where the name (SUBSTRING in this example) can be replaced by a specified name.

Overrides:

getAllowedSignatures in class SqlOperator

checkOperandTypes

public boolean checkOperandTypes(SqlCallBinding callBinding,
 boolean throwOnFailure)

Description copied from class: SqlOperator

Checks that the operand values in a SqlCall to this operator are valid. Subclasses must either override this method or supply an instance of SqlOperandTypeChecker to the constructor.

Overrides:

checkOperandTypes in class SqlOperator

Parameters:

callBinding - description of call

throwOnFailure - whether to throw an exception if check fails (otherwise returns false in that case)

Returns:

whether check succeeded