org.apache.shardingsphere.sql.parser.relation.segment.table

类 TablesContext

java.lang.Object

org.apache.shardingsphere.sql.parser.relation.segment.table.TablesContext

public final class TablesContext
extends Object

Tables context.

作者:

zhangliang

构造器概要

构造器

构造器和说明
TablesContext(SQLStatement sqlStatement)

方法概要

限定符和类型	方法和说明
com.google.common.base.Optional<Table>	find(String tableNameOrAlias) Find table via table name or alias.
com.google.common.base.Optional<String>	findTableName(ColumnSegment columnSegment, RelationMetas relationMetas) Find table name.
com.google.common.base.Optional<String>	getSchema() Get schema.
String	getSingleTableName() Get single table name.
Collection<String>	getTableNames() Get table names.
boolean	isEmpty() Judge table is empty or not.
boolean	isSingleTable() Judge is single table or not.

从类继承的方法 java.lang.Object

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

构造器详细资料

TablesContext

public TablesContext(SQLStatement sqlStatement)

方法详细资料

isEmpty

public boolean isEmpty()

Judge table is empty or not.

返回:

table is empty or not

isSingleTable

public boolean isSingleTable()

Judge is single table or not.

返回:

is single table or not

getSingleTableName

public String getSingleTableName()

Get single table name.

返回:

single table name

getTableNames

public Collection<String> getTableNames()

Get table names.

返回:

table names

find

public com.google.common.base.Optional<Table> find(String tableNameOrAlias)

Find table via table name or alias.

参数:

tableNameOrAlias - table name or alias

返回:

table

findTableName

public com.google.common.base.Optional<String> findTableName(ColumnSegment columnSegment,
                                                             RelationMetas relationMetas)

Find table name.

参数:

columnSegment - column segment

relationMetas - relation metas

返回:

table name

getSchema

public com.google.common.base.Optional<String> getSchema()

Get schema.

返回:

schema