Package org.apache.trevni

Class ColumnMetaData

java.lang.Object

java.util.AbstractMap<String,byte[]>

java.util.HashMap<String,byte[]>

java.util.LinkedHashMap<String,byte[]>

org.apache.trevni.MetaData<ColumnMetaData>

org.apache.trevni.ColumnMetaData

All Implemented Interfaces:

Serializable, Cloneable, Map<String,byte[]>

public class ColumnMetaData
extends MetaData<ColumnMetaData>

Metadata for a column.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
ColumnMetaData(String name, ValueType type)	Construct given a name and type.

Method Summary

Modifier and Type	Method	Description
List<ColumnMetaData>	getChildren()	Return this column's children or null.
String	getName()	Return this column's name.
int	getNumber()	Return this column's number in a file.
ColumnMetaData	getParent()	Return this column's parent or null.
ValueType	getType()	Return this column's type.
boolean	hasIndexValues()	Get whether this column has an index of blocks by value.
ColumnMetaData	hasIndexValues(boolean values)	Set whether this column has an index of blocks by value.
boolean	isArray()	Return true if this column is an array.
ColumnMetaData	isArray(boolean isArray)	Set whether this column is an array.
ColumnMetaData	setParent(ColumnMetaData parent)	Set this column's parent.

Methods inherited from class org.apache.trevni.MetaData

getBoolean, getChecksum, getCodec, getLong, getString, isReserved, set, set, set, setChecksum, setCodec, toString

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, removeEldestEntry, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Methods inherited from class java.util.AbstractMap

equals, hashCode

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Constructor Details

ColumnMetaData

public ColumnMetaData(String name,
 ValueType type)

Construct given a name and type.

Method Details

getName

public String getName()

Return this column's name.

getType

public ValueType getType()

Return this column's type.

getParent

public ColumnMetaData getParent()

Return this column's parent or null.

getChildren

public List<ColumnMetaData> getChildren()

Return this column's children or null.

isArray

public boolean isArray()

Return true if this column is an array.

getNumber

public int getNumber()

Return this column's number in a file.

hasIndexValues

public ColumnMetaData hasIndexValues(boolean values)

Set whether this column has an index of blocks by value. This only makes sense for sorted columns and permits one to seek into a column by value.

setParent

public ColumnMetaData setParent(ColumnMetaData parent)

Set this column's parent. A parent must be a preceding array column.

isArray

public ColumnMetaData isArray(boolean isArray)

Set whether this column is an array.

hasIndexValues

public boolean hasIndexValues()

Get whether this column has an index of blocks by value.