com.aliyun.odps.expression

Class GenerationExpressionParser

java.lang.Object

com.aliyun.odps.expression.GenerationExpressionParser

public class GenerationExpressionParser
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GenerationExpressionParser.LeafExprDesc

Constructor Summary

Constructors

Constructor and Description
GenerationExpressionParser()

Method Summary

Modifier and Type	Method and Description
static GenerateExpression	parse(String exprJson) trunc_time(d, 'day') --> [ { "leafExprDesc": { "reference": { "name": "d" }, "type": "timestamp" } }, { "leafExprDesc": { "constant": "day", "type": "string" } }, { "functionCall": { "name": "trunc_time", "type": "string" } } ]

Methods inherited from class java.lang.Object

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

Constructor Detail

GenerationExpressionParser

public GenerationExpressionParser()

Method Detail

parse

public static GenerateExpression parse(String exprJson)

trunc_time(d, 'day') --> [ { "leafExprDesc": { "reference": { "name": "d" }, "type": "timestamp" } }, { "leafExprDesc": { "constant": "day", "type": "string" } }, { "functionCall": { "name": "trunc_time", "type": "string" } } ]