com.exasol.sql.expression

Class ExpressionTerm

java.lang.Object

com.exasol.sql.expression.ExpressionTerm

public class ExpressionTerm
extends Object

Static factory methods for SQL expressions.

Method Summary

Modifier and Type	Method and Description
static BooleanLiteral	booleanLiteral(boolean value) Create a boolean literal.
static ColumnReference	column(String column) Create a reference to a table column.
static ColumnReference	column(String table, String column) Create a reference to a column in a specific table.
static BinaryArithmeticExpression	divide(ValueExpression left, ValueExpression right) Create a binary arithmetic expression with DIVIDE operator.
static DoubleLiteral	doubleLiteral(double value) Create a double literal.
static FloatLiteral	floatLiteral(float value) Create a float literal.
static Function	function(FunctionName functionName) Create an Exasol function.
static Function	function(FunctionName functionName, ValueExpression... valueExpressions) Create an Exasol function.
static IntegerLiteral	integerLiteral(int value) Create an integer literal.
static LongLiteral	longLiteral(long value) Create an long literal.
static BinaryArithmeticExpression	minus(ValueExpression left, ValueExpression right) Create a binary arithmetic expression with SUBTRACT operator.
static BinaryArithmeticExpression	multiply(ValueExpression left, ValueExpression right) Create a binary arithmetic expression with DIVIDE operator.
static NullLiteral	nullLiteral() Create a NULL literal.
static BinaryArithmeticExpression	plus(ValueExpression left, ValueExpression right) Create a binary arithmetic expression with ADD operator.
static StringLiteral	stringLiteral(char value) Create a string literal from a character.
static StringLiteral	stringLiteral(String value) Create a string literal.
static Function	udf(String functionName, ColumnsDefinition emitsColumnsDefinition, ValueExpression... valueExpressions) Create a User Defined Function.
static Function	udf(String functionName, ValueExpression... valueExpressions) Create a User Defined Function.

Methods inherited from class java.lang.Object

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

Method Detail

stringLiteral

public static StringLiteral stringLiteral(String value)

Create a string literal.

Parameters:

value - literal value

Returns:

string literal

stringLiteral

public static StringLiteral stringLiteral(char value)

Create a string literal from a character.

Parameters:

value - character value

Returns:

string literal

integerLiteral

public static IntegerLiteral integerLiteral(int value)

Create an integer literal.

Parameters:

value - literal value

Returns:

integer literal

longLiteral

public static LongLiteral longLiteral(long value)

Create an long literal.

Parameters:

value - literal value

Returns:

long literal

doubleLiteral

public static DoubleLiteral doubleLiteral(double value)

Create a double literal.

Parameters:

value - literal value

Returns:

double literal

floatLiteral

public static FloatLiteral floatLiteral(float value)

Create a float literal.

Parameters:

value - literal value

Returns:

float literal

booleanLiteral

public static BooleanLiteral booleanLiteral(boolean value)

Create a boolean literal.

Parameters:

value - literal value

Returns:

boolean literal

column

public static ColumnReference column(String column)

Create a reference to a table column.

Parameters:

column - column name

Returns:

column reference

column

public static ColumnReference column(String table,
                                     String column)

Create a reference to a column in a specific table.

Parameters:

table - table name

column - column name

Returns:

column reference

plus

public static BinaryArithmeticExpression plus(ValueExpression left,
                                              ValueExpression right)

Create a binary arithmetic expression with ADD operator.

Parameters:

left - left operand

right - right operand

Returns:

binary arithmetic expression

minus

public static BinaryArithmeticExpression minus(ValueExpression left,
                                               ValueExpression right)

Create a binary arithmetic expression with SUBTRACT operator.

Parameters:

left - left operand

right - right operand

Returns:

binary arithmetic expression

multiply

public static BinaryArithmeticExpression multiply(ValueExpression left,
                                                  ValueExpression right)

Create a binary arithmetic expression with DIVIDE operator.

Parameters:

left - left operand

right - right operand

Returns:

binary arithmetic expression

divide

public static BinaryArithmeticExpression divide(ValueExpression left,
                                                ValueExpression right)

Create a binary arithmetic expression with DIVIDE operator.

Parameters:

left - left operand

right - right operand

Returns:

binary arithmetic expression

function

public static Function function(FunctionName functionName)

Create an Exasol function.

Parameters:

functionName - a name of function

Returns:

function

function

public static Function function(FunctionName functionName,
                                ValueExpression... valueExpressions)

Create an Exasol function.

Parameters:

functionName - a name of function

valueExpressions - zero or more value expressions

Returns:

this instance for fluent programming

udf

public static Function udf(String functionName,
                           ColumnsDefinition emitsColumnsDefinition,
                           ValueExpression... valueExpressions)

Create a User Defined Function.

Parameters:

functionName - a name of function

emitsColumnsDefinition - column definitions for emits

valueExpressions - zero or more value expressions

Returns:

UDF

udf

public static Function udf(String functionName,
                           ValueExpression... valueExpressions)

Create a User Defined Function.

Parameters:

functionName - a name of function

valueExpressions - zero or more value expressions

Returns:

UDF

nullLiteral

public static NullLiteral nullLiteral()

Create a NULL literal.

Returns:

NULL literal