Package org.apache.flink.table.operations

Class OperationUtils

java.lang.Object

org.apache.flink.table.operations.OperationUtils

@Internal
public class OperationUtils
extends Object

Helper methods for Operations.

Method Summary

Modifier and Type	Method	Description
static String	formatParameter(String name, Object value)
static String	formatPartitionSpec(Map<String,String> spec)
static String	formatPartitionSpec(org.apache.flink.table.catalog.CatalogPartitionSpec spec)
static String	formatProperties(Map<String,String> properties)
static String	formatSelectColumns(org.apache.flink.table.catalog.ResolvedSchema schema, String inputAlias)
static <T extends Operation> String	formatWithChildren(String operationName, Map<String,Object> parameters, List<T> children, Function<T,String> childToString)	Formats a Tree of Operation in a unified way.
static String	indent(String item)	Increases indentation for description of string of child Operation.

Methods inherited from class java.lang.Object

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

Method Detail

indent

public static String indent(String item)

Increases indentation for description of string of child Operation. The input can already contain indentation. This will increase all the indentations by one level.

Parameters:

item - result of Operation.asSummaryString()

Returns:

string with increased indentation

formatWithChildren

public static <T extends Operation> String formatWithChildren(String operationName,
                                                              Map<String,Object> parameters,
                                                              List<T> children,
                                                              Function<T,String> childToString)

Formats a Tree of Operation in a unified way. It prints all the parameters and adds all children formatted and properly indented in the following lines.

The format is

 <operationName>: [(key1: [value1], key2: [v1, v2])]
     <child1>
          <child2>
     <child3>
 

Type Parameters:

T - The type of the child.

Parameters:

operationName - The operation name.

parameters - The operation's parameters.

children - The operation's children.

childToString - The function to convert child to String.

Returns:

String representation of the given operation.

formatSelectColumns

public static String formatSelectColumns(org.apache.flink.table.catalog.ResolvedSchema schema,
                                         @Nullable
                                         String inputAlias)

formatParameter

public static String formatParameter(String name,
                                     Object value)

formatProperties

public static String formatProperties(Map<String,String> properties)

formatPartitionSpec

public static String formatPartitionSpec(org.apache.flink.table.catalog.CatalogPartitionSpec spec)

formatPartitionSpec

public static String formatPartitionSpec(Map<String,String> spec)