Package com.mckoi.database.interpret
Class FromTableDirectSource
- java.lang.Object
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- com.mckoi.database.interpret.FromTableDirectSource
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- All Implemented Interfaces:
FromTableInterface
public class FromTableDirectSource extends java.lang.Object implements FromTableInterface
An implementation of FromTableInterface that wraps around an TableName/AbstractDataTable object. The handles case insensitive resolution.
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Field Summary
Fields Modifier and Type Field Description private boolean
case_insensitive
Set to true if this should do case insensitive resolutions.private DataTableDef
data_table_def
The DataTableDef object that describes the table.private TableName
root_name
The root name of the table.private TableName
table_name
The given TableName of this table.private TableQueryDef
table_query
The TableQueryDef object that links to the underlying table.private java.lang.String
unique_name
The unique name given to this source.
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Constructor Summary
Constructors Constructor Description FromTableDirectSource(DatabaseConnection connection, TableQueryDef table_query, java.lang.String unique_name, TableName given_name, TableName root_name)
Constructs the source.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Variable[]
allColumns()
Returns an array of Variable objects that references each column available in this table set item in order from left column to right column.QueryPlanNode
createFetchQueryPlanNode()
Creates a QueryPlanNode to be added into a query tree that fetches the table source.TableName
getGivenTableName()
Returns the given name of the table.TableName
getRootTableName()
Returns the root name of the table.java.lang.String
getUniqueName()
Returns a unique name given to this table source.boolean
matchesReference(java.lang.String catalog, java.lang.String schema, java.lang.String table)
Returns true if this source will match the given catalog, schema and table.Variable
resolveColumn(java.lang.String catalog, java.lang.String schema, java.lang.String table, java.lang.String column)
Returns a Variable that is a fully resolved form of the given column in this table set.int
resolveColumnCount(java.lang.String catalog, java.lang.String schema, java.lang.String table, java.lang.String column)
Returns the number of instances we can resolve the given catalog, schema, table and column name to a column or columns within this item.void
setCaseInsensitive(boolean status)
Toggle the case sensitivity flag.private boolean
stringCompare(java.lang.String str1, java.lang.String str2)
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Field Detail
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table_query
private TableQueryDef table_query
The TableQueryDef object that links to the underlying table.
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data_table_def
private DataTableDef data_table_def
The DataTableDef object that describes the table.
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unique_name
private java.lang.String unique_name
The unique name given to this source.
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table_name
private TableName table_name
The given TableName of this table.
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root_name
private TableName root_name
The root name of the table. For example, if this table is 'Part P' the root name is 'Part' and 'P' is the aliased name.
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case_insensitive
private boolean case_insensitive
Set to true if this should do case insensitive resolutions.
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Constructor Detail
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FromTableDirectSource
public FromTableDirectSource(DatabaseConnection connection, TableQueryDef table_query, java.lang.String unique_name, TableName given_name, TableName root_name)
Constructs the source.
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Method Detail
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getGivenTableName
public TableName getGivenTableName()
Returns the given name of the table. For example, if the Part table is aliased as P this returns P. If there is no given name, returns the root table name.
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getRootTableName
public TableName getRootTableName()
Returns the root name of the table. This TableName can always be used as a direct reference to a table in the database.
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createFetchQueryPlanNode
public QueryPlanNode createFetchQueryPlanNode()
Creates a QueryPlanNode to be added into a query tree that fetches the table source.
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setCaseInsensitive
public void setCaseInsensitive(boolean status)
Toggle the case sensitivity flag.
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stringCompare
private boolean stringCompare(java.lang.String str1, java.lang.String str2)
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getUniqueName
public java.lang.String getUniqueName()
Description copied from interface:FromTableInterface
Returns a unique name given to this table source. No other sources will share this identifier string.- Specified by:
getUniqueName
in interfaceFromTableInterface
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matchesReference
public boolean matchesReference(java.lang.String catalog, java.lang.String schema, java.lang.String table)
Description copied from interface:FromTableInterface
Returns true if this source will match the given catalog, schema and table. If any arguments are null then it is not included in the match.Used for 'Part.*' type glob searches.
- Specified by:
matchesReference
in interfaceFromTableInterface
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resolveColumnCount
public int resolveColumnCount(java.lang.String catalog, java.lang.String schema, java.lang.String table, java.lang.String column)
Description copied from interface:FromTableInterface
Returns the number of instances we can resolve the given catalog, schema, table and column name to a column or columns within this item. Note that if catalog, schema, table or column is 'null' then it means it doesn't matter.For example, say we need to resolve the column 'id' the arguments are null, null, null, "id". This may resolve to multiple columns if there is a mixture of tables with "id" as a column.
Note that parameters of 'null, null, null, null', 'null, null, null, not null', 'null, null, not null, not null', 'null, not null, not null, not null', and 'not null, not null, not null, not null' are only accepted.
- Specified by:
resolveColumnCount
in interfaceFromTableInterface
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resolveColumn
public Variable resolveColumn(java.lang.String catalog, java.lang.String schema, java.lang.String table, java.lang.String column)
Description copied from interface:FromTableInterface
Returns a Variable that is a fully resolved form of the given column in this table set. This method does not have to check whether the parameters reference more than one column. If more than one column is referenced, the actual column returned is implementation specific.- Specified by:
resolveColumn
in interfaceFromTableInterface
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allColumns
public Variable[] allColumns()
Description copied from interface:FromTableInterface
Returns an array of Variable objects that references each column available in this table set item in order from left column to right column.- Specified by:
allColumns
in interfaceFromTableInterface
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