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Data processing utilities for ClickHouse
package com.clickhouse.data.value;
import java.math.BigDecimal;
import java.math.BigInteger;
import com.clickhouse.data.ClickHouseDataConfig;
import com.clickhouse.data.ClickHouseValue;
import com.clickhouse.data.ClickHouseValues;
/**
* Wrapper class of {@code double}.
*/
public class ClickHouseDoubleValue implements ClickHouseValue {
/**
* Create a new instance representing null value.
*
* @return new instance representing null value
*/
public static ClickHouseDoubleValue ofNull() {
return ofNull(null);
}
/**
* Update given value to null or create a new instance if {@code ref} is
* null.
*
* @param ref object to update, could be null
* @return same object as {@code ref} or a new instance if it's null
*/
public static ClickHouseDoubleValue ofNull(ClickHouseValue ref) {
return ref instanceof ClickHouseDoubleValue ? ((ClickHouseDoubleValue) ref).set(true, 0D)
: new ClickHouseDoubleValue(true, 0D);
}
/**
* Wrap the given value.
*
* @param value value
* @return object representing the value
*/
public static ClickHouseDoubleValue of(double value) {
return of(null, value);
}
/**
* Update value of the given object or create a new instance if {@code
* ref} is null.
*
* @param ref object to update, could be null
* @param value value
* @return same object as {@code ref} or a new instance if it's null
*/
public static ClickHouseDoubleValue of(ClickHouseValue ref, double value) {
return ref instanceof ClickHouseDoubleValue ? ((ClickHouseDoubleValue) ref).set(false, value)
: new ClickHouseDoubleValue(false, value);
}
private boolean isNull;
private double value;
protected ClickHouseDoubleValue(boolean isNull, double value) {
set(isNull, value);
}
protected ClickHouseDoubleValue set(boolean isNull, double value) {
this.isNull = isNull;
this.value = isNull ? 0L : value;
return this;
}
/**
* Gets value.
*
* @return value
*/
public double getValue() {
return value;
}
@Override
public ClickHouseDoubleValue copy(boolean deep) {
return new ClickHouseDoubleValue(isNull, value);
}
@Override
public boolean isNullOrEmpty() {
return isNull;
}
@Override
public byte asByte() {
return (byte) value;
}
@Override
public short asShort() {
return (short) value;
}
@Override
public int asInteger() {
return (int) value;
}
@Override
public long asLong() {
return (long) value;
}
@Override
public BigInteger asBigInteger() {
return isNull ? null : BigDecimal.valueOf(value).toBigInteger();
}
@Override
public float asFloat() {
return (float) value;
}
@Override
public double asDouble() {
return value;
}
@Override
public BigDecimal asBigDecimal() {
if (isNull) {
return null;
} else if (Double.isNaN(value) || value == Double.POSITIVE_INFINITY || value == Double.NEGATIVE_INFINITY) {
throw new NumberFormatException(ClickHouseValues.ERROR_INF_OR_NAN);
} else if (value == 0D) {
return BigDecimal.ZERO;
} else if (value == 1D) {
return BigDecimal.ONE;
}
return new BigDecimal(Double.toString(value));
}
@Override
public BigDecimal asBigDecimal(int scale) {
if (isNull) {
return null;
} else if (Double.isNaN(value) || value == Double.POSITIVE_INFINITY || value == Double.NEGATIVE_INFINITY) {
throw new NumberFormatException(ClickHouseValues.ERROR_INF_OR_NAN);
}
BigDecimal dec = BigDecimal.valueOf(value);
if (value == 0D) {
dec = dec.setScale(scale);
} else {
int diff = scale - dec.scale();
if (diff > 0) {
dec = dec.divide(BigDecimal.TEN.pow(diff + 1));
} else if (diff < 0) {
dec = dec.setScale(scale, ClickHouseDataConfig.DEFAULT_ROUNDING_MODE);
}
}
return dec;
}
@Override
public Object asObject() {
return isNull ? null : getValue();
}
@Override
public String asString() {
if (isNull) {
return null;
}
return String.valueOf(value);
}
@Override
public ClickHouseDoubleValue resetToDefault() {
return set(false, 0D);
}
@Override
public ClickHouseDoubleValue resetToNullOrEmpty() {
return set(true, 0D);
}
@Override
public String toSqlExpression() {
if (isNullOrEmpty()) {
return ClickHouseValues.NULL_EXPR;
} else if (isNaN()) {
return ClickHouseValues.NAN_EXPR;
} else if (value == Float.POSITIVE_INFINITY) {
return ClickHouseValues.INF_EXPR;
} else if (value == Float.NEGATIVE_INFINITY) {
return ClickHouseValues.NINF_EXPR;
}
return String.valueOf(value);
}
@Override
public ClickHouseDoubleValue update(boolean value) {
return set(false, value ? 1 : 0);
}
@Override
public ClickHouseDoubleValue update(char value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(byte value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(short value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(int value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(long value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(float value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(double value) {
return set(false, value);
}
@Override
public ClickHouseDoubleValue update(BigInteger value) {
return value == null ? resetToNullOrEmpty() : set(false, value.doubleValue());
}
@Override
public ClickHouseDoubleValue update(BigDecimal value) {
return value == null ? resetToNullOrEmpty() : set(false, value.doubleValue());
}
@Override
public ClickHouseDoubleValue update(Enum value) {
return value == null ? resetToNullOrEmpty() : set(false, value.ordinal());
}
@Override
public ClickHouseDoubleValue update(String value) {
if (value == null) {
resetToNullOrEmpty();
} else if (value.isEmpty()) {
resetToDefault();
} else {
set(false, Double.parseDouble(value));
}
return this;
}
@Override
public ClickHouseDoubleValue update(ClickHouseValue value) {
return value == null || value.isNullOrEmpty() ? resetToNullOrEmpty() : set(false, value.asDouble());
}
@Override
public ClickHouseDoubleValue update(Object value) {
if (value instanceof Number) {
return set(false, ((Number) value).doubleValue());
} else if (value instanceof ClickHouseValue) {
return set(false, ((ClickHouseValue) value).asDouble());
}
ClickHouseValue.super.update(value);
return this;
}
@Override
public boolean equals(Object obj) {
if (this == obj) { // too bad this is a mutable class :<
return true;
} else if (obj == null || getClass() != obj.getClass()) {
return false;
}
ClickHouseDoubleValue v = (ClickHouseDoubleValue) obj;
return isNull == v.isNull && value == v.value;
}
@Override
public int hashCode() {
// not going to use Objects.hash(isNull, value) due to autoboxing
long l = Double.doubleToLongBits(value);
return (31 + (isNull ? 1231 : 1237)) * 31 + (int) (l ^ (l >>> 32));
}
@Override
public String toString() {
return ClickHouseValues.convertToString(this);
}
}