org.apache.flink.table.api

Class ApiExpression

java.lang.Object

org.apache.flink.table.api.internal.BaseExpressions<Object,ApiExpression>

org.apache.flink.table.api.ApiExpression

All Implemented Interfaces:

Expression

public final class ApiExpression
extends BaseExpressions<Object,ApiExpression>
implements Expression

Java API class that gives access to expression operations.

See Also:

BaseExpressions

Method Summary

Modifier and Type	Method and Description
<R> R	accept(ExpressionVisitor<R> visitor)
String	asSummaryString() Returns a string that summarizes this expression for printing to a console.
List<Expression>	getChildren()
protected ApiExpression	toApiSpecificExpression(Expression expression)
Expression	toExpr()

Methods inherited from class org.apache.flink.table.api.internal.BaseExpressions

abs, acos, and, as, asc, asin, at, atan, avg, between, bin, cardinality, cast, cast, ceil, ceil, charLength, collect, cos, cosh, cot, count, day, days, degrees, desc, distinct, dividedBy, element, end, exp, extract, flatten, floor, floor, fromBase64, get, get, hex, hour, hours, in, in, initCap, isEqual, isFalse, isGreater, isGreaterOrEqual, isLess, isLessOrEqual, isNotEqual, isNotFalse, isNotNull, isNotTrue, isNull, isTrue, like, ln, log, log, log10, log2, lowerCase, lpad, ltrim, max, md5, milli, millis, min, minus, minute, minutes, mod, month, months, notBetween, or, over, overlay, overlay, plus, position, power, proctime, quarter, quarters, radians, regexpExtract, regexpExtract, regexpReplace, repeat, replace, round, rowtime, rpad, rtrim, second, seconds, sha1, sha2, sha224, sha256, sha384, sha512, sign, similar, sin, sinh, sqrt, start, stddevPop, stddevSamp, substring, substring, sum, sum0, tan, tanh, then, times, toBase64, toDate, toTime, toTimestamp, trim, trim, trimLeading, trimLeading, trimTrailing, trimTrailing, truncate, truncate, upperCase, varPop, varSamp, week, weeks, year, years

Methods inherited from class java.lang.Object

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

Method Detail

asSummaryString

public String asSummaryString()

Description copied from interface: Expression

Returns a string that summarizes this expression for printing to a console. An implementation might skip very specific properties.

Specified by:

asSummaryString in interface Expression

Returns:

summary string of this expression for debugging purposes

toExpr

public Expression toExpr()

Specified by:

toExpr in class BaseExpressions<Object,ApiExpression>

toApiSpecificExpression

protected ApiExpression toApiSpecificExpression(Expression expression)

Specified by:

toApiSpecificExpression in class BaseExpressions<Object,ApiExpression>

getChildren

public List<Expression> getChildren()

Specified by:

getChildren in interface Expression

accept

public <R> R accept(ExpressionVisitor<R> visitor)

Specified by:

accept in interface Expression