org.apache.flink.cdc.runtime.parser

Class 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

Field Summary

Fields

Modifier and Type	Field and Description
static String	DEFAULT_EPOCH_TIME
static String	DEFAULT_TIME_ZONE

Constructor Summary

Constructors

Constructor and Description
JaninoCompiler()

Method Summary

Modifier and Type	Method and Description
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)
static org.codehaus.janino.Java.Rvalue	translateSqlNodeToJaninoRvalue(org.apache.calcite.sql.SqlNode transform)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_EPOCH_TIME

public static final String DEFAULT_EPOCH_TIME

See Also:

Constant Field Values

DEFAULT_TIME_ZONE

public static final String DEFAULT_TIME_ZONE

See Also:

Constant Field Values

Constructor Detail

JaninoCompiler

public JaninoCompiler()

Method Detail

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)

translateSqlNodeToJaninoRvalue

public static org.codehaus.janino.Java.Rvalue translateSqlNodeToJaninoRvalue(org.apache.calcite.sql.SqlNode transform)