Package com.clickhouse.client.data

Class ClickHouseObjectValue<T>

java.lang.Object

com.clickhouse.client.data.ClickHouseObjectValue<T>

All Implemented Interfaces:

ClickHouseValue, Serializable

Direct Known Subclasses:

ClickHouseArrayValue, ClickHouseBigDecimalValue, ClickHouseBigIntegerValue, ClickHouseBitmapValue, ClickHouseByteArrayValue, ClickHouseDateTimeValue, ClickHouseDateValue, ClickHouseDoubleArrayValue, ClickHouseFloatArrayValue, ClickHouseGeoMultiPolygonValue, ClickHouseGeoPointValue, ClickHouseGeoPolygonValue, ClickHouseGeoRingValue, ClickHouseIntArrayValue, ClickHouseIpv4Value, ClickHouseIpv6Value, ClickHouseLongArrayValue, ClickHouseMapValue, ClickHouseNestedValue, ClickHouseOffsetDateTimeValue, ClickHouseShortArrayValue, ClickHouseTupleValue, ClickHouseUuidValue

public abstract class ClickHouseObjectValue<T>
extends Object
implements ClickHouseValue

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ClickHouseObjectValue(T value)

Method Summary

Modifier and Type	Method	Description
BigDecimal	asBigDecimal(int scale)	Gets value as BigDecimal.
BigInteger	asBigInteger()	Gets value as BigInteger.
byte	asByte()	Gets value as byte.
double	asDouble()	Gets value as double.
float	asFloat()	Gets value as float.
int	asInteger()	Gets value as integer.
long	asLong()	Gets value as long.
Object	asObject()	Gets value as an object.
short	asShort()	Gets value as short.
String	asString(int length, Charset charset)	Gets value as fixed length(in bytes) string.
boolean	equals(Object obj)
T	getValue()	Gets value.
int	hashCode()
boolean	isNullOrEmpty()	Checks if the value is null, or empty for non-null types like Array, Tuple and Map.
ClickHouseObjectValue<T>	resetToNullOrEmpty()	Resets value to null, or empty when null is not supported(e.g.
protected ClickHouseObjectValue<T>	set(T value)
String	toSqlExpression()	Converts the value to escaped SQL expression.
String	toString()
ClickHouseValue	update(Object value)	Updates value.

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, asMap, asMap, asObject, asOffsetDateTime, asOffsetDateTime, asString, asString, asString, asTime, asTime, asTuple, asUuid, asZonedDateTime, asZonedDateTime, copy, copy, isInfinity, isNaN, newUnsupportedException, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, update, updateUnknown

Constructor Detail

ClickHouseObjectValue

protected ClickHouseObjectValue(T value)

Method Detail

set

protected ClickHouseObjectValue<T> set(T value)

getValue

public T getValue()

Gets value.

Returns:

value

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

Returns:

true if the value is null or empty; false otherwise

asByte

public byte asByte()

Description copied from interface: ClickHouseValue

Gets value as byte.

Specified by:

asByte in interface ClickHouseValue

Returns:

byte value

asShort

public short asShort()

Description copied from interface: ClickHouseValue

Gets value as short.

Specified by:

asShort in interface ClickHouseValue

Returns:

short value

asInteger

public int asInteger()

Description copied from interface: ClickHouseValue

Gets value as integer.

Specified by:

asInteger in interface ClickHouseValue

Returns:

integer value

asLong

public long asLong()

Description copied from interface: ClickHouseValue

Gets value as long.

Specified by:

asLong in interface ClickHouseValue

Returns:

long value

asBigInteger

public BigInteger asBigInteger()

Description copied from interface: ClickHouseValue

Gets value as BigInteger.

Specified by:

asBigInteger in interface ClickHouseValue

Returns:

big integer, could be null

asFloat

public float asFloat()

Description copied from interface: ClickHouseValue

Gets value as float.

Specified by:

asFloat in interface ClickHouseValue

Returns:

float value

asDouble

public double asDouble()

Description copied from interface: ClickHouseValue

Gets value as double.

Specified by:

asDouble in interface ClickHouseValue

Returns:

double value

asBigDecimal

public BigDecimal asBigDecimal(int scale)

Description copied from interface: ClickHouseValue

Gets value as BigDecimal.

Specified by:

asBigDecimal in interface ClickHouseValue

Parameters:

scale - scale of the decimal

Returns:

big decimal, could be null

asObject

public Object asObject()

Description copied from interface: ClickHouseValue

Gets value as an object.

Specified by:

asObject in interface ClickHouseValue

Returns:

an object representing the value, could be null

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

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

resetToNullOrEmpty

public ClickHouseObjectValue<T> 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

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

Returns:

escaped SQL expression

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

Parameters:

value - value to update, could be null

Returns:

this object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object