org.apache.flink.cdc.runtime.parser

类 JaninoCompiler

java.lang.Object

org.apache.flink.cdc.runtime.parser.JaninoCompiler

public class JaninoCompiler
extends Object

Use Janino compiler to compiler the statement of flink cdc pipeline transform into the executable code of Janino. For example, compiler 'string1 || string2' into 'concat(string1, string2)'. The core logic is to traverse SqlNode tree and transform to Atom tree. Janino documents: https://www.janino.net/index.html#properties

字段概要

字段

限定符和类型	字段和说明
static String	DEFAULT_EPOCH_TIME
static String	DEFAULT_TIME_ZONE

构造器概要

构造器

构造器和说明
JaninoCompiler()

方法概要

限定符和类型	方法和说明
static org.codehaus.janino.ExpressionEvaluator	compileExpression(String expression, List<String> argumentNames, List<Class<?>> argumentClasses, Class<?> returnClass)
static String	loadSystemFunction(String expression)
static String	translateSqlNodeToJaninoExpression(org.apache.calcite.sql.SqlNode transform, List<UserDefinedFunctionDescriptor> udfDescriptors)
static org.codehaus.janino.Java.Rvalue	translateSqlNodeToJaninoRvalue(org.apache.calcite.sql.SqlNode transform, List<UserDefinedFunctionDescriptor> udfDescriptors)

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT_EPOCH_TIME

public static final String DEFAULT_EPOCH_TIME

另请参阅:

常量字段值

DEFAULT_TIME_ZONE

public static final String DEFAULT_TIME_ZONE

另请参阅:

常量字段值

构造器详细资料

JaninoCompiler

public JaninoCompiler()

方法详细资料

loadSystemFunction

public static String loadSystemFunction(String expression)

compileExpression

public static org.codehaus.janino.ExpressionEvaluator compileExpression(String expression,
                                                                        List<String> argumentNames,
                                                                        List<Class<?>> argumentClasses,
                                                                        Class<?> returnClass)

translateSqlNodeToJaninoExpression

public static String translateSqlNodeToJaninoExpression(org.apache.calcite.sql.SqlNode transform,
                                                        List<UserDefinedFunctionDescriptor> udfDescriptors)

translateSqlNodeToJaninoRvalue

public static org.codehaus.janino.Java.Rvalue translateSqlNodeToJaninoRvalue(org.apache.calcite.sql.SqlNode transform,
                                                                             List<UserDefinedFunctionDescriptor> udfDescriptors)