oracle.pg.rdbms.pgql

Class PgqlColumnDescriptorImpl

java.lang.Object

oracle.pg.rdbms.pgql.PgqlColumnDescriptorImpl

All Implemented Interfaces:

PgqlColumnDescriptor

public class PgqlColumnDescriptorImpl
extends java.lang.Object
implements PgqlColumnDescriptor

Describes the metadata for a logical column in a PGQL query result.

Nested Class Summary

Nested classes/interfaces inherited from interface oracle.pg.rdbms.pgql.PgqlColumnDescriptor

PgqlColumnDescriptor.Type

Constructor Summary

Constructors

Constructor and Description
PgqlColumnDescriptorImpl(java.lang.String colName, PgqlColumnDescriptor.Type colType, int offset) Constructor

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o)
java.lang.String	getColName() Returns the name of this column.
PgqlColumnDescriptor.Type	getColType() Returns the column type.
int	getSqlOffset() Returns the SQL column starting position of this logical PGQL column in the column list of the SQL translation.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

PgqlColumnDescriptorImpl

public PgqlColumnDescriptorImpl(java.lang.String colName,
                                PgqlColumnDescriptor.Type colType,
                                int offset)

Constructor

Parameters:

colName - the name of this return column

colType - the type of this return column

offset - the starting position of this logical PGQL column in the corresponding list of SQL result columns (first position is 1).

Method Detail

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

getColName

public java.lang.String getColName()

Returns the name of this column.

Specified by:

getColName in interface PgqlColumnDescriptor

Returns:

the column name

getColType

public PgqlColumnDescriptor.Type getColType()

Returns the column type. PgqlColumnDescriptor.Type.VERTEX for OracleVertex PgqlColumnDescriptor.Type.EDGE for OracleEdge PgqlColumnDescriptor.Type.VALUE for a property value

Specified by:

getColType in interface PgqlColumnDescriptor

Returns:

the column type

getSqlOffset

public int getSqlOffset()

Returns the SQL column starting position of this logical PGQL column in the column list of the SQL translation. PgqlColumnDescriptor.Type.VERTEX and PgqlColumnDescriptor.Type.EDGE PGQL columns have two corresponding SQL columns (column_name$IT, column_name$ID). PgqlColumnDescriptor.Type.VALUE PGQL columns have four corresponding SQL columns (column_name$T, column_name$V, column_name$VN, column_name$VT). The offset starts from 1. That is, the first PGQL column has an offset of 1.

Specified by:

getSqlOffset in interface PgqlColumnDescriptor

Returns:

the starting position of this logical PGQL column in the return columns of the SQL translation

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object