Top Description Methods

com.mysql.cj.protocol

public Interface ColumnDefinition

Known Direct Subinterfaces: com.mysql.cj.jdbc.result.CachedResultSetMetaData
Known Direct Implementers: com.mysql.cj.result.DefaultColumnDefinition
Imports: java.util.Map, com.mysql.cj.result.Field

Represents protocol specific result set metadata, eg., for native protocol, Protocol::ColumnDefinition41 protocol entity.

Method Summary

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

Method Detail

buildIndexMapping	back to summary
public void buildIndexMapping() 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.

exportTo	back to summary
public void exportTo(ColumnDefinition columnDefinition)

findColumn	back to summary
public int findColumn(String columnName, boolean useColumnNamesInFindColumn, int indexBase)

getColumnLabelToIndex	back to summary
public Map<String, Integer> getColumnLabelToIndex()

getColumnNameToIndex	back to summary
public Map<String, Integer> getColumnNameToIndex()

getColumnToIndexCache	back to summary
public Map<String, Integer> getColumnToIndexCache()

getFields	back to summary
public Field[] getFields()

getFullColumnNameToIndex	back to summary
public Map<String, Integer> getFullColumnNameToIndex()

hasBuiltIndexMapping	back to summary
public boolean hasBuiltIndexMapping()

hasLargeFields

back to summary

public boolean hasLargeFields()

Check if fields with type BLOB, MEDIUMBLOB, LONGBLOB, TEXT, MEDIUMTEXT or LONGTEXT exist in this ColumnDefinition.

Returns:boolean: true if fields with type BLOB, MEDIUMBLOB, LONGBLOB, TEXT, MEDIUMTEXT or LONGTEXT exist in this ColumnDefinition.

initializeFrom	back to summary
public void initializeFrom(ColumnDefinition columnDefinition)

setColumnLabelToIndex	back to summary
public void setColumnLabelToIndex(Map<String, Integer> columnLabelToIndex)

setColumnNameToIndex	back to summary
public void setColumnNameToIndex(Map<String, Integer> colNameToIndex)

setColumnToIndexCache	back to summary
public void setColumnToIndexCache(Map<String, Integer> columnToIndexCache)

setFields	back to summary
public void setFields(Field[] fields)

setFullColumnNameToIndex	back to summary
public void setFullColumnNameToIndex(Map<String, Integer> fullColNameToIndex)