程序包 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psql

类 PostgresDialect

java.lang.Object

org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.psql.PostgresDialect

所有已实现的接口:

Serializable, JdbcDialect

直接已知子类:

PostgresLowDialect

public class PostgresDialect
extends Object
implements JdbcDialect

另请参阅:

序列化表格

嵌套类概要

从接口继承的嵌套类/接口 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect

JdbcDialect.AlterType

字段概要

字段

修饰符和类型	字段	说明
static int	DEFAULT_POSTGRES_FETCH_SIZE
String	fieldIde

从接口继承的字段 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect

log

构造器概要

构造器

构造器	说明
PostgresDialect()
PostgresDialect(String fieldIde)

方法概要

修饰符和类型	方法	说明
Long	approximateRowCntStatement(Connection connection, JdbcSourceTable table)	Approximate total number of entries in the lookup table.
String	convertType(String columnName, String columnType)	Cast column type e.g.
PreparedStatement	creatPreparedStatement(Connection connection, String queryTemplate, int fetchSize)	Different dialects optimize their PreparedStatement
String	dialectName()	Get the name of jdbc dialect.
JdbcDialectTypeMapper	getJdbcDialectTypeMapper()	get jdbc meta-information type to seatunnel data type mapper.
JdbcRowConverter	getRowConverter()	Get converter that convert jdbc object to seatunnel internal object.
Optional<String>	getUpsertStatement(String database, String tableName, String[] fieldNames, String[] uniqueKeyFields)	Constructs the dialects upsert statement if supported; such as MySQL's DUPLICATE KEY UPDATE, or PostgreSQL's ON CONFLICT... DO UPDATE SET...
String	hashModForField(String fieldName, int mod)
String	hashModForField(String nativeType, String fieldName, int mod)
org.apache.seatunnel.api.table.catalog.TablePath	parse(String tablePath)
Object	queryNextChunkMax(Connection connection, JdbcSourceTable table, String columnName, int chunkSize, Object includedLowerBound)	Query the maximum value of the next chunk, and the next chunk must be greater than or equal to includedLowerBound value [min_1, max_1), [min_2, max_2),...
String	quoteDatabaseIdentifier(String identifier)	Quotes the identifier for database name or field name
String	quoteIdentifier(String identifier)	Quotes the identifier for table name or field name
String	tableIdentifier(String database, String tableName)
String	tableIdentifier(org.apache.seatunnel.api.table.catalog.TablePath tablePath)

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.seatunnel.connectors.seatunnel.jdbc.internal.dialect.JdbcDialect

buildAlterTableBasicSql, buildAlterTableSql, connectionUrlParse, decorateWithColumnNameAndType, decorateWithComment, decorateWithDefaultValue, decorateWithNullable, defaultParameter, extractTableName, generateAlterTableSql, getDeleteStatement, getFieldIde, getInsertIntoStatement, getJdbcConnectionProvider, getResultSetMetaData, getRowExistsStatement, getUpdateStatement, isSpecialDefaultValue, needsQuotesWithDefaultValue, quotesDefaultValue, refreshTableSchemaBySchemaChangeEvent, sampleDataFromColumn

字段详细资料

DEFAULT_POSTGRES_FETCH_SIZE

public static final int DEFAULT_POSTGRES_FETCH_SIZE

另请参阅:

常量字段值

fieldIde

public String fieldIde

构造器详细资料

PostgresDialect

public PostgresDialect()

PostgresDialect

public PostgresDialect(String fieldIde)

方法详细资料

dialectName

public String dialectName()

从接口复制的说明: JdbcDialect

Get the name of jdbc dialect.

指定者:

dialectName 在接口中 JdbcDialect

返回:

the dialect name.

getRowConverter

public JdbcRowConverter getRowConverter()

从接口复制的说明: JdbcDialect

Get converter that convert jdbc object to seatunnel internal object.

指定者:

getRowConverter 在接口中 JdbcDialect

返回:

a row converter for the database

getJdbcDialectTypeMapper

public JdbcDialectTypeMapper getJdbcDialectTypeMapper()

从接口复制的说明: JdbcDialect

get jdbc meta-information type to seatunnel data type mapper.

指定者:

getJdbcDialectTypeMapper 在接口中 JdbcDialect

返回:

a type mapper for the database

hashModForField

public String hashModForField(String nativeType,
                              String fieldName,
                              int mod)

指定者:

hashModForField 在接口中 JdbcDialect

hashModForField

public String hashModForField(String fieldName,
                              int mod)

指定者:

hashModForField 在接口中 JdbcDialect

queryNextChunkMax

public Object queryNextChunkMax(Connection connection,
                                JdbcSourceTable table,
                                String columnName,
                                int chunkSize,
                                Object includedLowerBound)
                         throws SQLException

从接口复制的说明: JdbcDialect

Query the maximum value of the next chunk, and the next chunk must be greater than or equal to includedLowerBound value [min_1, max_1), [min_2, max_2),... [min_n, null). Each time this method is called it will return max1, max2...

指定者:

queryNextChunkMax 在接口中 JdbcDialect

参数:

connection - JDBC connection.

table - table info.

columnName - column name.

chunkSize - chunk size.

includedLowerBound - the previous chunk end value.

返回:

next chunk end value.

抛出:

SQLException

getUpsertStatement

public Optional<String> getUpsertStatement(String database,
                                           String tableName,
                                           String[] fieldNames,
                                           String[] uniqueKeyFields)

从接口复制的说明: JdbcDialect

Constructs the dialects upsert statement if supported; such as MySQL's DUPLICATE KEY UPDATE, or PostgreSQL's ON CONFLICT... DO UPDATE SET...

If supported, the returned string will be used as a PreparedStatement. Fields in the statement must be in the same order as the fieldNames parameter.

If the dialect does not support native upsert statements, the writer will fallback to SELECT ROW Exists + UPDATE/INSERT which may have poor performance.

指定者:

getUpsertStatement 在接口中 JdbcDialect

返回:

the dialects UPSERT statement or Optional.empty().

creatPreparedStatement

public PreparedStatement creatPreparedStatement(Connection connection,
                                                String queryTemplate,
                                                int fetchSize)
                                         throws SQLException

从接口复制的说明: JdbcDialect

Different dialects optimize their PreparedStatement

指定者:

creatPreparedStatement 在接口中 JdbcDialect

返回:

The logic about optimize PreparedStatement

抛出:

SQLException

tableIdentifier

public String tableIdentifier(String database,
                              String tableName)

指定者:

tableIdentifier 在接口中 JdbcDialect

quoteIdentifier

public String quoteIdentifier(String identifier)

从接口复制的说明: JdbcDialect

Quotes the identifier for table name or field name

指定者:

quoteIdentifier 在接口中 JdbcDialect

tableIdentifier

public String tableIdentifier(org.apache.seatunnel.api.table.catalog.TablePath tablePath)

指定者:

tableIdentifier 在接口中 JdbcDialect

quoteDatabaseIdentifier

public String quoteDatabaseIdentifier(String identifier)

从接口复制的说明: JdbcDialect

Quotes the identifier for database name or field name

指定者:

quoteDatabaseIdentifier 在接口中 JdbcDialect

parse

public org.apache.seatunnel.api.table.catalog.TablePath parse(String tablePath)

指定者:

parse 在接口中 JdbcDialect

approximateRowCntStatement

public Long approximateRowCntStatement(Connection connection,
                                       JdbcSourceTable table)
                                throws SQLException

从接口复制的说明: JdbcDialect

Approximate total number of entries in the lookup table.

指定者:

approximateRowCntStatement 在接口中 JdbcDialect

参数:

connection - The JDBC connection object used to connect to the database.

table - table info.

返回:

approximate row count statement.

抛出:

SQLException

convertType

public String convertType(String columnName,
                          String columnType)

从接口复制的说明: JdbcDialect

Cast column type e.g. CAST(column AS type)

指定者:

convertType 在接口中 JdbcDialect

返回:

the text of converted column type.