/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.value;
import org.h2.engine.CastDataProvider;
import org.h2.engine.Constants;
import org.h2.message.DbException;
/**
* Implementation of the ARRAY data type.
*/
public final class ValueArray extends ValueCollectionBase {
/**
* Empty array.
*/
public static final ValueArray EMPTY = get(TypeInfo.TYPE_NULL, Value.EMPTY_VALUES, null);
private TypeInfo type;
private final TypeInfo componentType;
private ValueArray(TypeInfo componentType, Value[] list, CastDataProvider provider) {
super(list);
int length = list.length;
if (length > Constants.MAX_ARRAY_CARDINALITY) {
String typeName = getTypeName(getValueType());
throw DbException.getValueTooLongException(typeName, typeName, length);
}
for (int i = 0; i < length; i++) {
list[i] = list[i].castTo(componentType, provider);
}
this.componentType = componentType;
}
/**
* Get or create a array value for the given value array.
* Do not clone the data.
*
* @param list the value array
* @param provider the cast information provider
* @return the value
*/
public static ValueArray get(Value[] list, CastDataProvider provider) {
return new ValueArray(TypeInfo.getHigherType(list), list, provider);
}
/**
* Get or create a array value for the given value array.
* Do not clone the data.
*
* @param componentType the type of elements, or {@code null}
* @param list the value array
* @param provider the cast information provider
* @return the value
*/
public static ValueArray get(TypeInfo componentType, Value[] list, CastDataProvider provider) {
return new ValueArray(componentType, list, provider);
}
@Override
public TypeInfo getType() {
TypeInfo type = this.type;
if (type == null) {
TypeInfo componentType = getComponentType();
this.type = type = TypeInfo.getTypeInfo(getValueType(), values.length, 0, componentType);
}
return type;
}
@Override
public int getValueType() {
return ARRAY;
}
public TypeInfo getComponentType() {
return componentType;
}
@Override
public String getString() {
StringBuilder builder = new StringBuilder().append('[');
for (int i = 0; i < values.length; i++) {
if (i > 0) {
builder.append(", ");
}
builder.append(values[i].getString());
}
return builder.append(']').toString();
}
@Override
public int compareTypeSafe(Value o, CompareMode mode, CastDataProvider provider) {
ValueArray v = (ValueArray) o;
if (values == v.values) {
return 0;
}
int l = values.length;
int ol = v.values.length;
int len = Math.min(l, ol);
for (int i = 0; i < len; i++) {
Value v1 = values[i];
Value v2 = v.values[i];
int comp = v1.compareTo(v2, provider, mode);
if (comp != 0) {
return comp;
}
}
return Integer.compare(l, ol);
}
@Override
public StringBuilder getSQL(StringBuilder builder, int sqlFlags) {
builder.append("ARRAY [");
int length = values.length;
for (int i = 0; i < length; i++) {
if (i > 0) {
builder.append(", ");
}
values[i].getSQL(builder, sqlFlags);
}
return builder.append(']');
}
@Override
public boolean equals(Object other) {
if (!(other instanceof ValueArray)) {
return false;
}
ValueArray v = (ValueArray) other;
if (values == v.values) {
return true;
}
int len = values.length;
if (len != v.values.length) {
return false;
}
for (int i = 0; i < len; i++) {
if (!values[i].equals(v.values[i])) {
return false;
}
}
return true;
}
}