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Data processing utilities for ClickHouse
package com.clickhouse.data.value.array;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.ZoneOffset;
import java.util.Arrays;
import java.util.Collection;
import java.util.Enumeration;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import java.util.Map.Entry;
import com.clickhouse.data.ClickHouseArraySequence;
import com.clickhouse.data.ClickHouseChecker;
import com.clickhouse.data.ClickHouseUtils;
import com.clickhouse.data.ClickHouseValue;
import com.clickhouse.data.ClickHouseValues;
import com.clickhouse.data.value.ClickHouseObjectValue;
/**
* Wrapper of {@code double[]}.
*/
public class ClickHouseDoubleArrayValue extends ClickHouseObjectValue implements ClickHouseArraySequence {
private static final String TYPE_NAME = "double[]";
/**
* Creates an empty array.
*
* @return empty array
*/
public static ClickHouseDoubleArrayValue ofEmpty() {
return of(ClickHouseValues.EMPTY_DOUBLE_ARRAY);
}
/**
* Wrap the given value.
*
* @param value value
* @return object representing the value
*/
public static ClickHouseDoubleArrayValue 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 ClickHouseDoubleArrayValue of(ClickHouseValue ref, double[] value) {
return ref instanceof ClickHouseDoubleArrayValue ? ((ClickHouseDoubleArrayValue) ref).set(value)
: new ClickHouseDoubleArrayValue(value);
}
protected ClickHouseDoubleArrayValue(double[] value) {
super(value);
}
@Override
protected ClickHouseDoubleArrayValue set(double[] value) {
super.set(ClickHouseChecker.nonNull(value, ClickHouseValues.TYPE_ARRAY));
return this;
}
@Override
public Object[] asArray() {
double[] v = getValue();
int len = v.length;
Double[] array = new Double[len];
for (int i = 0; i < len; i++) {
array[i] = Double.valueOf(v[i]);
}
return array;
}
@Override
public E[] asArray(Class clazz) {
double[] v = getValue();
int len = v.length;
E[] array = ClickHouseValues.createObjectArray(clazz, len, 1);
for (int i = 0; i < len; i++) {
array[i] = clazz.cast(v[i]);
}
return array;
}
@Override
public Map asMap(Class keyClass, Class valueClass) {
if (keyClass == null || valueClass == null) {
throw new IllegalArgumentException("Non-null key and value classes are required");
}
double[] v = getValue();
Map map = new LinkedHashMap<>();
for (int i = 0; i < v.length; i++) {
map.put(keyClass.cast(i + 1), valueClass.cast(v[i]));
}
// why not use Collections.unmodifiableMap(map) here?
return map;
}
@Override
public String asString() {
double[] value = getValue();
int len = value == null ? 0 : value.length;
if (len == 0) {
return ClickHouseValues.EMPTY_ARRAY_EXPR;
}
StringBuilder builder = new StringBuilder().append('[').append(value[0]);
for (int i = 1; i < len; i++) {
builder.append(',').append(value[i]);
}
return builder.append(']').toString();
}
@Override
public ClickHouseDoubleArrayValue copy(boolean deep) {
if (!deep) {
return new ClickHouseDoubleArrayValue(getValue());
}
double[] value = getValue();
return new ClickHouseDoubleArrayValue(Arrays.copyOf(value, value.length));
}
@Override
public boolean isNullable() {
return false;
}
@Override
public boolean isNullOrEmpty() {
return getValue().length == 0;
}
@Override
public ClickHouseDoubleArrayValue resetToDefault() {
set(ClickHouseValues.EMPTY_DOUBLE_ARRAY);
return this;
}
@Override
public ClickHouseDoubleArrayValue resetToNullOrEmpty() {
return resetToDefault();
}
@Override
public String toSqlExpression() {
return asString();
}
@Override
public ClickHouseDoubleArrayValue update(boolean[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i] ? 1D : 0D;
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(char[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i];
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(byte value) {
return set(new double[] { value });
}
@Override
public ClickHouseDoubleArrayValue update(byte[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i];
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(short value) {
return set(new double[] { value });
}
@Override
public ClickHouseDoubleArrayValue update(short[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i];
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(int value) {
return set(new double[] { value });
}
@Override
public ClickHouseDoubleArrayValue update(int[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i];
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(long value) {
return set(new double[] { value });
}
@Override
public ClickHouseDoubleArrayValue update(long[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i];
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(float value) {
return set(new double[] { value });
}
@Override
public ClickHouseDoubleArrayValue update(float[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[len];
for (int i = 0; i < len; i++) {
v[i] = value[i];
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(double value) {
return set(new double[] { value });
}
@Override
public ClickHouseDoubleArrayValue update(double[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
}
return set(value);
}
@Override
public ClickHouseDoubleArrayValue update(BigInteger value) {
return set(value == null ? ClickHouseValues.EMPTY_DOUBLE_ARRAY : new double[] { value.doubleValue() });
}
@Override
public ClickHouseDoubleArrayValue update(BigDecimal value) {
return set(value == null ? ClickHouseValues.EMPTY_DOUBLE_ARRAY : new double[] { value.doubleValue() });
}
@Override
public ClickHouseDoubleArrayValue update(Enum value) {
return set(value == null ? ClickHouseValues.EMPTY_DOUBLE_ARRAY : new double[] { value.ordinal() });
}
@Override
public ClickHouseDoubleArrayValue update(Inet4Address value) {
if (value == null) {
return resetToNullOrEmpty();
}
throw newUnsupportedException(ClickHouseValues.TYPE_IPV4, TYPE_NAME);
}
@Override
public ClickHouseDoubleArrayValue update(Inet6Address value) {
if (value == null) {
return resetToNullOrEmpty();
}
throw newUnsupportedException(ClickHouseValues.TYPE_IPV6, TYPE_NAME);
}
@Override
public ClickHouseDoubleArrayValue update(LocalDate value) {
return set(value == null ? ClickHouseValues.EMPTY_DOUBLE_ARRAY : new double[] { value.toEpochDay() });
}
@Override
public ClickHouseDoubleArrayValue update(LocalTime value) {
return set(value == null ? ClickHouseValues.EMPTY_DOUBLE_ARRAY : new double[] { value.toSecondOfDay() });
}
@Override
public ClickHouseDoubleArrayValue update(LocalDateTime value) {
return set(value == null ? ClickHouseValues.EMPTY_DOUBLE_ARRAY
: new double[] { value.toEpochSecond(ZoneOffset.UTC) });
}
@Override
public ClickHouseDoubleArrayValue update(Collection value) {
int size = value == null ? 0 : value.size();
if (size == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[size];
int index = 0;
for (Object o : value) {
v[index++] = o == null ? 0 : ((Number) o).doubleValue();
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(Enumeration value) {
if (value == null) {
return resetToNullOrEmpty();
}
List v = new LinkedList<>();
while (value.hasMoreElements()) {
v.add((Number) value.nextElement());
}
double[] values = new double[v.size()];
int index = 0;
for (Number n : v) {
values[index++] = n == null ? 0 : n.doubleValue();
}
return set(values);
}
@Override
public ClickHouseDoubleArrayValue update(Map value) {
int size = value == null ? 0 : value.size();
if (size == 0) {
return resetToNullOrEmpty();
}
double[] v = new double[size];
int index = 0;
for (Entry e : value.entrySet()) {
Object o = e.getValue();
v[index++] = o == null ? 0 : ((Number) e.getValue()).doubleValue();
}
return set(v);
}
@Override
public ClickHouseDoubleArrayValue update(String value) {
if (ClickHouseChecker.isNullOrBlank(value)) {
set(ClickHouseValues.EMPTY_DOUBLE_ARRAY);
} else {
List list = ClickHouseUtils.readValueArray(value, 0, value.length());
if (list.isEmpty()) {
set(ClickHouseValues.EMPTY_DOUBLE_ARRAY);
} else {
double[] arr = new double[list.size()];
int index = 0;
for (String v : list) {
arr[index++] = v == null ? 0D : Double.parseDouble(v);
}
set(arr);
}
}
return this;
}
@Override
public ClickHouseDoubleArrayValue update(UUID value) {
if (value == null) {
return resetToNullOrEmpty();
}
throw newUnsupportedException(ClickHouseValues.TYPE_UUID, TYPE_NAME);
}
@Override
public ClickHouseDoubleArrayValue update(ClickHouseValue value) {
if (value == null || value.isNullOrEmpty()) {
return resetToNullOrEmpty();
} else if (value instanceof ClickHouseDoubleArrayValue) {
set(((ClickHouseDoubleArrayValue) value).getValue());
} else {
update(value.asArray());
}
return this;
}
@Override
public ClickHouseDoubleArrayValue update(Object[] value) {
int len = value == null ? 0 : value.length;
if (len == 0) {
return resetToNullOrEmpty();
} else {
double[] values = new double[len];
for (int i = 0; i < len; i++) {
Object o = value[i];
values[i] = o == null ? 0 : ((Number) o).doubleValue();
}
set(values);
}
return this;
}
@Override
public ClickHouseValue updateUnknown(Object value) {
if (value == null) {
return resetToNullOrEmpty();
} else if (value instanceof Number) {
return set(new double[] { ((Number) value).doubleValue() });
} else {
throw newUnsupportedException(value.getClass().getName(), TYPE_NAME);
}
}
@Override
public ClickHouseDoubleArrayValue update(Object value) {
if (value instanceof double[]) {
set((double[]) value);
} else {
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;
}
return Arrays.equals(getValue(), ((ClickHouseDoubleArrayValue) obj).getValue());
}
@Override
public int hashCode() {
return Arrays.hashCode(getValue());
}
@Override
public ClickHouseArraySequence allocate(int length, Class clazz, int level) {
if (length < 1) {
resetToDefault();
} else {
set(new double[length]);
}
return this;
}
@Override
public int length() {
return isNullOrEmpty() ? 0 : getValue().length;
}
@Override
public V getValue(int index, V value) {
value.update(getValue()[index]);
return value;
}
@Override
public ClickHouseArraySequence setValue(int index, ClickHouseValue value) {
getValue()[index] = value.asDouble();
return this;
}
}