io.debezium.relational

Class ColumnId

java.lang.Object

io.debezium.relational.ColumnId

All Implemented Interfaces:

Comparable<ColumnId>

@Immutable
public final class ColumnId
extends Object
implements Comparable<ColumnId>

Unique identifier for a column in a database table.

Author:

Randall Hauch

Field Summary

Fields

Modifier and Type	Field and Description
private String	columnName
private String	id
private static Pattern	IDENTIFIER_SEPARATOR_PATTERN
private TableId	tableId

Constructor Summary

Constructors

Constructor and Description
ColumnId(String catalogName, String schemaName, String tableName, String columnName) Create a new column identifier.
ColumnId(TableId tableId, String columnName) Create a new column identifier.

Method Summary

Modifier and Type	Method and Description
String	catalog() Get the name of the JDBC catalog.
private static String	columnId(TableId tableId, String columnName)
String	columnName() Get the name of the table.
int	compareTo(ColumnId that)
int	compareToIgnoreCase(ColumnId that)
boolean	equals(Object obj)
static Map<TableId,Predicate<Column>>	filter(String columnBlacklist) Create the map of predicate functions that specify which columns are to be included.
int	hashCode()
static ColumnId	parse(String str) Parse the supplied string delimited with a period (.) character, extracting the last segment into a column name and the prior segments into the TableID.
private static ColumnId	parse(String str, boolean useCatalogBeforeSchema) Parse the supplied string delimited with the specified delimiter character, extracting the last segment into a column name and the prior segments into the TableID.
String	schema() Get the name of the JDBC schema.
String	table() Get the name of the table.
TableId	tableId() Get the identifier for the table that owns this column.
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

IDENTIFIER_SEPARATOR_PATTERN

private static final Pattern IDENTIFIER_SEPARATOR_PATTERN

tableId

private final TableId tableId

columnName

private final String columnName

id

private final String id

Constructor Detail

ColumnId

public ColumnId(TableId tableId,
                String columnName)

Create a new column identifier.

Parameters:

tableId - the identifier of the table; may not be null

columnName - the name of the column; may not be null

ColumnId

public ColumnId(String catalogName,
                String schemaName,
                String tableName,
                String columnName)

Create a new column identifier.

Parameters:

catalogName - the name of the database catalog that contains the table; may be null if the JDBC driver does not show a schema for this table

schemaName - the name of the database schema that contains the table; may be null if the JDBC driver does not show a schema for this table

tableName - the name of the table; may not be null

columnName - the name of the column; may not be null

Method Detail

filter

public static Map<TableId,Predicate<Column>> filter(String columnBlacklist)

Create the map of predicate functions that specify which columns are to be included.

Qualified column names are comma-separated strings that are each parsed into ColumnId objects.

Parameters:

columnBlacklist - the comma-separated string listing the qualified names of the columns to be explicitly disallowed; may be null

Returns:

the predicate function; never null

parse

public static ColumnId parse(String str)

Parse the supplied string delimited with a period (.) character, extracting the last segment into a column name and the prior segments into the TableID.

Parameters:

str - the input string

Returns:

the column ID, or null if it could not be parsed

parse

private static ColumnId parse(String str,
                              boolean useCatalogBeforeSchema)

Parse the supplied string delimited with the specified delimiter character, extracting the last segment into a column name and the prior segments into the TableID.

Parameters:

str - the input string

useCatalogBeforeSchema - true if the parsed string contains only 2 items and the first should be used as the catalog and the second as the table name, or false if the first should be used as the schema and the second as the table name

Returns:

the column ID, or null if it could not be parsed

tableId

public TableId tableId()

Get the identifier for the table that owns this column.

Returns:

the table identifier; never null

catalog

public String catalog()

Get the name of the JDBC catalog.

Returns:

the catalog name, or null if the table does not belong to a catalog

schema

public String schema()

Get the name of the JDBC schema.

Returns:

the JDBC schema name, or null if the table does not belong to a JDBC schema

table

public String table()

Get the name of the table.

Returns:

the table name; never null

columnName

public String columnName()

Get the name of the table.

Returns:

the table name; never null

compareTo

public int compareTo(ColumnId that)

Specified by:

compareTo in interface Comparable<ColumnId>

compareToIgnoreCase

public int compareToIgnoreCase(ColumnId that)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

columnId

private static String columnId(TableId tableId,
                               String columnName)