com.mysql.cj.result

Class DefaultColumnDefinition

java.lang.Object

com.mysql.cj.result.DefaultColumnDefinition

All Implemented Interfaces:

ColumnDefinition, ProtocolEntity

Direct Known Subclasses:

CachedResultSetMetaDataImpl

public class DefaultColumnDefinition
extends java.lang.Object
implements ColumnDefinition

Protocol::ColumnDefinition41 object

Field Summary

Fields

Modifier and Type	Field and Description
protected Field[]	fields

Constructor Summary

Constructors

Constructor and Description
DefaultColumnDefinition()
DefaultColumnDefinition(Field[] fields)

Method Summary

Modifier and Type	Method and Description
void	buildIndexMapping() Builds a hash between column names and their indices for fast retrieval.
void	exportTo(ColumnDefinition columnDefinition)
int	findColumn(java.lang.String columnName, boolean useColumnNamesInFindColumn, int indexBase)
java.util.Map<java.lang.String,java.lang.Integer>	getColumnLabelToIndex()
java.util.Map<java.lang.String,java.lang.Integer>	getColumnNameToIndex()
java.util.Map<java.lang.String,java.lang.Integer>	getColumnToIndexCache()
Field[]	getFields()
java.util.Map<java.lang.String,java.lang.Integer>	getFullColumnNameToIndex()
boolean	hasBuiltIndexMapping()
boolean	hasLargeFields() Check if fields with type BLOB, MEDIUMBLOB, LONGBLOB, TEXT, MEDIUMTEXT or LONGTEXT exist in this ColumnDefinition.
void	initializeFrom(ColumnDefinition columnDefinition)
void	setColumnLabelToIndex(java.util.Map<java.lang.String,java.lang.Integer> columnLabelToIndex)
void	setColumnNameToIndex(java.util.Map<java.lang.String,java.lang.Integer> colNameToIndex)
void	setColumnToIndexCache(java.util.Map<java.lang.String,java.lang.Integer> columnToIndexCache)
void	setFields(Field[] fields)
void	setFullColumnNameToIndex(java.util.Map<java.lang.String,java.lang.Integer> fullColNameToIndex)

Methods inherited from class java.lang.Object

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

Field Detail

fields

protected Field[] fields

Constructor Detail

DefaultColumnDefinition

public DefaultColumnDefinition()

DefaultColumnDefinition

public DefaultColumnDefinition(Field[] fields)

Method Detail

getFields

public Field[] getFields()

Specified by:

getFields in interface ColumnDefinition

setFields

public void setFields(Field[] fields)

Specified by:

setFields in interface ColumnDefinition

buildIndexMapping

public void buildIndexMapping()

Description copied from interface: ColumnDefinition

Builds a hash between column names and their indices for fast retrieval. This is done lazily to support findColumn() and get*(String), as it can be more expensive than just retrieving result set values by ordinal index.

Specified by:

buildIndexMapping in interface ColumnDefinition

hasBuiltIndexMapping

public boolean hasBuiltIndexMapping()

Specified by:

hasBuiltIndexMapping in interface ColumnDefinition

getColumnLabelToIndex

public java.util.Map<java.lang.String,java.lang.Integer> getColumnLabelToIndex()

Specified by:

getColumnLabelToIndex in interface ColumnDefinition

setColumnLabelToIndex

public void setColumnLabelToIndex(java.util.Map<java.lang.String,java.lang.Integer> columnLabelToIndex)

Specified by:

setColumnLabelToIndex in interface ColumnDefinition

getFullColumnNameToIndex

public java.util.Map<java.lang.String,java.lang.Integer> getFullColumnNameToIndex()

Specified by:

getFullColumnNameToIndex in interface ColumnDefinition

setFullColumnNameToIndex

public void setFullColumnNameToIndex(java.util.Map<java.lang.String,java.lang.Integer> fullColNameToIndex)

Specified by:

setFullColumnNameToIndex in interface ColumnDefinition

getColumnNameToIndex

public java.util.Map<java.lang.String,java.lang.Integer> getColumnNameToIndex()

Specified by:

getColumnNameToIndex in interface ColumnDefinition

setColumnNameToIndex

public void setColumnNameToIndex(java.util.Map<java.lang.String,java.lang.Integer> colNameToIndex)

Specified by:

setColumnNameToIndex in interface ColumnDefinition

getColumnToIndexCache

public java.util.Map<java.lang.String,java.lang.Integer> getColumnToIndexCache()

Specified by:

getColumnToIndexCache in interface ColumnDefinition

setColumnToIndexCache

public void setColumnToIndexCache(java.util.Map<java.lang.String,java.lang.Integer> columnToIndexCache)

Specified by:

setColumnToIndexCache in interface ColumnDefinition

initializeFrom

public void initializeFrom(ColumnDefinition columnDefinition)

Specified by:

initializeFrom in interface ColumnDefinition

exportTo

public void exportTo(ColumnDefinition columnDefinition)

Specified by:

exportTo in interface ColumnDefinition

findColumn

public int findColumn(java.lang.String columnName,
                      boolean useColumnNamesInFindColumn,
                      int indexBase)

Specified by:

findColumn in interface ColumnDefinition

hasLargeFields

public boolean hasLargeFields()

Check if fields with type BLOB, MEDIUMBLOB, LONGBLOB, TEXT, MEDIUMTEXT or LONGTEXT exist in this ColumnDefinition. This check is used for making a decision about whether we want to force a buffer row (better for rows with large fields).

Specified by:

hasLargeFields in interface ColumnDefinition

Returns:

true if this ColumnDefinition has large fields