java.lang.Object
- com.clickhouse.client.data.ClickHouseObjectValue<Map<?,?>>
- - com.clickhouse.client.data.ClickHouseMapValue

All Implemented Interfaces:

ClickHouseValue, Serializable
```
public class ClickHouseMapValue
extends ClickHouseObjectValue<Map<?,?>>
```
See Also:

Serialized Form

Constructor Summary

Constructors
Modifier Constructor Description

protected ClickHouseMapValue(Map<?,?> value, Class<?> keyType, Class<?> valueType)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Map<Object,Object>`	`asMap()`	Gets value as a map.
`<K,V> Map<K,V>`	`asMap(Class<K> keyClass, Class<V> valueClass)`	Gets value as a map.
`String`	`asString(int length, Charset charset)`	Gets value as fixed length(in bytes) string.
`ClickHouseMapValue`	`copy(boolean deep)`	Gets a copy of this value object.
`protected Object`	`getDefaultKey()`
`boolean`	`isNullOrEmpty()`	Checks if the value is null, or empty for non-null types like Array, Tuple and Map.
`static ClickHouseMapValue`	`of(ClickHouseValue ref, Map<?,?> value, Class<?> keyType, Class<?> valueType)`	Update value of the given object or create a new instance if `ref` is null.
`static ClickHouseMapValue`	`of(Map<?,?> value, Class<?> keyType, Class<?> valueType)`	Wrap the given value.
`static ClickHouseMapValue`	`ofEmpty(Class<?> keyType, Class<?> valueType)`	Creates an empty map.
`ClickHouseMapValue`	`resetToNullOrEmpty()`	Resets value to null, or empty when null is not supported(e.g.
`protected ClickHouseMapValue`	`set(Map<?,?> value)`
`String`	`toSqlExpression()`	Converts the value to escaped SQL expression.
`ClickHouseMapValue`	`update(byte value)`	Updates value.
`ClickHouseMapValue`	`update(double value)`	Updates value.
`ClickHouseMapValue`	`update(float value)`	Updates value.
`ClickHouseMapValue`	`update(int value)`	Updates value.
`ClickHouseMapValue`	`update(long value)`	Updates value.
`ClickHouseMapValue`	`update(short value)`	Updates value.
`ClickHouseMapValue`	`update(ClickHouseValue value)`	Updates value.
`ClickHouseMapValue`	`update(Enum<?> value)`	Updates value.
`ClickHouseValue`	`update(Object value)`	Updates value.
`ClickHouseMapValue`	`update(String value)`	Updates value.
`ClickHouseMapValue`	`update(BigDecimal value)`	Updates value.
`ClickHouseMapValue`	`update(BigInteger value)`	Updates value.
`ClickHouseMapValue`	`update(Inet4Address value)`	Updates value.
`ClickHouseMapValue`	`update(Inet6Address value)`	Updates value.
`ClickHouseMapValue`	`update(LocalDate value)`	Updates value.
`ClickHouseMapValue`	`update(LocalDateTime value)`	Updates value.
`ClickHouseMapValue`	`update(LocalTime value)`	Updates value.
`ClickHouseMapValue`	`update(Map<?,?> value)`	Updates value.
`ClickHouseMapValue`	`update(UUID value)`	Updates value.
`ClickHouseValue`	`updateUnknown(Object value)`	Updates value when the type is not supported.

Methods inherited from class com.clickhouse.client.data.ClickHouseObjectValue
asBigDecimal, asBigInteger, asByte, asDouble, asFloat, asInteger, asLong, asObject, asShort, equals, getValue, hashCode, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.clickhouse.client.ClickHouseValue
asArray, asArray, asBigDecimal, asBoolean, asByteStream, asCharacter, asCharacterStream, asDate, asDateTime, asDateTime, asEnum, asInet4Address, asInet6Address, asObject, asOffsetDateTime, asOffsetDateTime, asString, asString, asString, asTime, asTime, asTuple, asUuid, asZonedDateTime, asZonedDateTime, copy, isInfinity, isNaN, newUnsupportedException, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update

- Constructor Detail
  - ClickHouseMapValue
```
protected ClickHouseMapValue(Map<?,?> value,
                             Class<?> keyType,
                             Class<?> valueType)
```
- Method Detail
  - ofEmpty
```
public static ClickHouseMapValue ofEmpty(Class<?> keyType,
                                         Class<?> valueType)
```
    Creates an empty map.
    
    Parameters:
    
    keyType - non-null class of key
    
    valueType - non-null class of value
    
    Returns:
    
    empty map
  - of
```
public static ClickHouseMapValue of(Map<?,?> value,
                                    Class<?> keyType,
                                    Class<?> valueType)
```
    Wrap the given value.
    
    Parameters:
    
    value - value
    
    keyType - non-null class of key
    
    valueType - non-null class of value
    
    Returns:
    
    object representing the value
  - of
```
public static ClickHouseMapValue of(ClickHouseValue ref,
                                    Map<?,?> value,
                                    Class<?> keyType,
                                    Class<?> valueType)
```
    Update value of the given object or create a new instance if ref is null.
    
    Parameters:
    
    ref - object to update, could be null
    
    value - value
    
    keyType - non-null class of key
    
    valueType - non-null class of value
    
    Returns:
    
    same object as ref or a new instance if it's null
  - getDefaultKey
```
protected Object getDefaultKey()
```
  - set
```
protected ClickHouseMapValue set(Map<?,?> value)
```
    Overrides:
    
    set in class ClickHouseObjectValue<Map<?,?>>
  - copy
```
public ClickHouseMapValue copy(boolean deep)
```
    Description copied from interface: ClickHouseValue
    
    Gets a copy of this value object.
    
    Parameters:
    
    deep - true to create a deep copy; false for a shallow copy
    
    Returns:
    
    copy of this value object
  - asMap
```
public Map<Object,Object> asMap()
```
    Description copied from interface: ClickHouseValue
    
    Gets value as a map.
    
    Returns:
    
    non-null map value
  - asMap
```
public <K,V> Map<K,V> asMap(Class<K> keyClass,
                                        Class<V> valueClass)
```
    Description copied from interface: ClickHouseValue
    
    Gets value as a map.
    
    Type Parameters:
    
    K - type of key
    
    V - type of value
    
    Parameters:
    
    keyClass - non-null class of key
    
    valueClass - non-null class of value
    
    Returns:
    
    non-null map value
  - asString
```
public String asString(int length,
                       Charset charset)
```
    Description copied from interface: ClickHouseValue
    
    Gets value as fixed length(in bytes) string.
    
    Specified by:
    
    asString in interface ClickHouseValue
    
    Overrides:
    
    asString in class ClickHouseObjectValue<Map<?,?>>
    
    Parameters:
    
    length - byte length of the string, 0 or negative number means unbounded
    
    charset - charset, null is same as default(UTF-8)
    
    Returns:
    
    string value, could be null
  - isNullOrEmpty
```
public boolean isNullOrEmpty()
```
    Description copied from interface: ClickHouseValue
    
    Checks if the value is null, or empty for non-null types like Array, Tuple and Map.
    Please pay attention that only nullability will be considered for String, meaning this method will return false for an empty string. This is because String is treated as value-based type instead of a container like Array.
    
    Specified by:
    
    isNullOrEmpty in interface ClickHouseValue
    
    Overrides:
    
    isNullOrEmpty in class ClickHouseObjectValue<Map<?,?>>
    
    Returns:
    
    true if the value is null or empty; false otherwise
  - resetToNullOrEmpty
```
public ClickHouseMapValue resetToNullOrEmpty()
```
    Description copied from interface: ClickHouseValue
    
    Resets value to null, or empty when null is not supported(e.g. Array, Tuple and Map etc.).
    Keep in mind that String is value-based type, so this method will change its value to null instead of an empty string.
    
    Specified by:
    
    resetToNullOrEmpty in interface ClickHouseValue
    
    Overrides:
    
    resetToNullOrEmpty in class ClickHouseObjectValue<Map<?,?>>
    
    Returns:
    
    this object
  - toSqlExpression
```
public String toSqlExpression()
```
    Description copied from interface: ClickHouseValue
    
    Converts the value to escaped SQL expression. For example, number 123 will be converted to 123, while string "12'3" will be converted to @{code '12\'3'}.
    
    Specified by:
    
    toSqlExpression in interface ClickHouseValue
    
    Overrides:
    
    toSqlExpression in class ClickHouseObjectValue<Map<?,?>>
    
    Returns:
    
    escaped SQL expression
  - update
```
public ClickHouseMapValue update(byte value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(short value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(int value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(long value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(float value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(double value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(BigInteger value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(BigDecimal value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(String value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(Enum<?> value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(Inet4Address value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(Inet6Address value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(LocalDate value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(LocalTime value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(LocalDateTime value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(Map<?,?> value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(UUID value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - updateUnknown
```
public ClickHouseValue updateUnknown(Object value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value when the type is not supported. This method will be called at the end of ClickHouseValue.update(Object) after trying all known classes. By default, it's same as update(String.valueOf(value)).
    Please avoid to call ClickHouseValue.update(Object) here as it will create endless loop.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseMapValue update(ClickHouseValue value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value.
    
    Parameters:
    
    value - value to update
    
    Returns:
    
    this object
  - update
```
public ClickHouseValue update(Object value)
```
    Description copied from interface: ClickHouseValue
    
    Updates value. This method tries to identify type of value and then use corresponding update method to proceed. Unknown value will be passed to ClickHouseValue.updateUnknown(Object).
    
    Specified by:
    
    update in interface ClickHouseValue
    
    Overrides:
    
    update in class ClickHouseObjectValue<Map<?,?>>
    
    Parameters:
    
    value - value to update, could be null
    
    Returns:
    
    this object

Class ClickHouseMapValue

Constructor Summary

Method Summary

Methods inherited from class com.clickhouse.client.data.ClickHouseObjectValue

Methods inherited from class java.lang.Object

Methods inherited from interface com.clickhouse.client.ClickHouseValue

Constructor Detail

ClickHouseMapValue

Method Detail

ofEmpty

of

of

getDefaultKey

set

copy

asMap

asMap

asString

isNullOrEmpty

resetToNullOrEmpty

toSqlExpression

update

update

update

update

update

update

update

update

update

update

update

update

update

update

update

update

update

updateUnknown

update

update