/**
* Copyright (C) 2015 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.strata.data.scenario;
import static com.opengamma.strata.collect.Guavate.toImmutableList;
import static com.opengamma.strata.collect.Guavate.zipWithIndex;
import java.io.Serializable;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;
import java.util.function.IntFunction;
import java.util.stream.Stream;
import org.joda.beans.Bean;
import org.joda.beans.BeanBuilder;
import org.joda.beans.BeanDefinition;
import org.joda.beans.ImmutableBean;
import org.joda.beans.JodaBeanUtils;
import org.joda.beans.MetaProperty;
import org.joda.beans.Property;
import org.joda.beans.PropertyDefinition;
import org.joda.beans.impl.direct.DirectFieldsBeanBuilder;
import org.joda.beans.impl.direct.DirectMetaBean;
import org.joda.beans.impl.direct.DirectMetaProperty;
import org.joda.beans.impl.direct.DirectMetaPropertyMap;
import com.google.common.collect.ImmutableList;
import com.opengamma.strata.basics.currency.Currency;
import com.opengamma.strata.basics.currency.FxConvertible;
import com.opengamma.strata.collect.ArgChecker;
import com.opengamma.strata.collect.Messages;
/**
* A scenario array holding one value for each scenario.
* <p>
* This contains a list of values, one value for each scenario.
*
* @param <T> the type of each individual value
*/
@BeanDefinition(builderScope = "private")
final class DefaultScenarioArray<T>
implements ScenarioArray<T>, ScenarioFxConvertible<ScenarioArray<?>>, ImmutableBean, Serializable {
/**
* The values, one per scenario.
*/
@PropertyDefinition(validate = "notNull")
private final ImmutableList<T> values;
//-------------------------------------------------------------------------
/**
* Obtains an instance from the specified array of values.
*
* @param <T> the type of the value
* @param values the values, one value for each scenario
* @return an instance with the specified values
*/
@SafeVarargs
public static <T> DefaultScenarioArray<T> of(T... values) {
return new DefaultScenarioArray<>(ImmutableList.copyOf(values));
}
/**
* Obtains an instance from the specified list of values.
*
* @param <T> the type of the value
* @param values the values, one value for each scenario
* @return an instance with the specified values
*/
public static <T> DefaultScenarioArray<T> of(List<T> values) {
return new DefaultScenarioArray<>(values);
}
/**
* Obtains an instance using a function to create the entries.
* <p>
* The function is passed the scenario index and returns the value for that index.
*
* @param <T> the type of the value
* @param scenarioCount the number of scenarios
* @param valueFunction the function used to obtain each value
* @return an instance initialized using the function
* @throws IllegalArgumentException is size is zero or less
*/
public static <T> DefaultScenarioArray<T> of(int scenarioCount, IntFunction<T> valueFunction) {
ArgChecker.notNegativeOrZero(scenarioCount, "scenarioCount");
ImmutableList.Builder<T> builder = ImmutableList.builder();
for (int i = 0; i < scenarioCount; i++) {
builder.add(valueFunction.apply(i));
}
return new DefaultScenarioArray<>(builder.build());
}
//-------------------------------------------------------------------------
@Override
public int getScenarioCount() {
return values.size();
}
@Override
public T get(int index) {
return values.get(index);
}
@Override
public Stream<T> stream() {
return values.stream();
}
//-------------------------------------------------------------------------
@Override
public ScenarioArray<?> convertedTo(Currency resultCurrency, ScenarioFxRateProvider fxRateProvider) {
int scenarioCount = getScenarioCount();
if (fxRateProvider.getScenarioCount() != scenarioCount) {
throw new IllegalArgumentException(Messages.format(
"Expected {} FX rates but received {}", scenarioCount, fxRateProvider.getScenarioCount()));
}
ImmutableList<Object> converted = zipWithIndex(values.stream())
.map(tp -> convert(resultCurrency, fxRateProvider, tp.getFirst(), tp.getSecond()))
.collect(toImmutableList());
return DefaultScenarioArray.of(converted);
}
// convert value if possible
private Object convert(Currency reportingCurrency, ScenarioFxRateProvider fxRateProvider, Object base, int index) {
if (base instanceof FxConvertible<?>) {
FxConvertible<?> convertible = (FxConvertible<?>) base;
return convertible.convertedTo(reportingCurrency, fxRateProvider.fxRateProvider(index));
}
return base;
}
//------------------------- AUTOGENERATED START -------------------------
///CLOVER:OFF
/**
* The meta-bean for {@code DefaultScenarioArray}.
* @return the meta-bean, not null
*/
@SuppressWarnings("rawtypes")
public static DefaultScenarioArray.Meta meta() {
return DefaultScenarioArray.Meta.INSTANCE;
}
/**
* The meta-bean for {@code DefaultScenarioArray}.
* @param <R> the bean's generic type
* @param cls the bean's generic type
* @return the meta-bean, not null
*/
@SuppressWarnings("unchecked")
public static <R> DefaultScenarioArray.Meta<R> metaDefaultScenarioArray(Class<R> cls) {
return DefaultScenarioArray.Meta.INSTANCE;
}
static {
JodaBeanUtils.registerMetaBean(DefaultScenarioArray.Meta.INSTANCE);
}
/**
* The serialization version id.
*/
private static final long serialVersionUID = 1L;
private DefaultScenarioArray(
List<T> values) {
JodaBeanUtils.notNull(values, "values");
this.values = ImmutableList.copyOf(values);
}
@SuppressWarnings("unchecked")
@Override
public DefaultScenarioArray.Meta<T> metaBean() {
return DefaultScenarioArray.Meta.INSTANCE;
}
@Override
public <R> Property<R> property(String propertyName) {
return metaBean().<R>metaProperty(propertyName).createProperty(this);
}
@Override
public Set<String> propertyNames() {
return metaBean().metaPropertyMap().keySet();
}
//-----------------------------------------------------------------------
/**
* Gets the values, one per scenario.
* @return the value of the property, not null
*/
public ImmutableList<T> getValues() {
return values;
}
//-----------------------------------------------------------------------
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj != null && obj.getClass() == this.getClass()) {
DefaultScenarioArray<?> other = (DefaultScenarioArray<?>) obj;
return JodaBeanUtils.equal(values, other.values);
}
return false;
}
@Override
public int hashCode() {
int hash = getClass().hashCode();
hash = hash * 31 + JodaBeanUtils.hashCode(values);
return hash;
}
@Override
public String toString() {
StringBuilder buf = new StringBuilder(64);
buf.append("DefaultScenarioArray{");
buf.append("values").append('=').append(JodaBeanUtils.toString(values));
buf.append('}');
return buf.toString();
}
//-----------------------------------------------------------------------
/**
* The meta-bean for {@code DefaultScenarioArray}.
* @param <T> the type
*/
public static final class Meta<T> extends DirectMetaBean {
/**
* The singleton instance of the meta-bean.
*/
@SuppressWarnings("rawtypes")
static final Meta INSTANCE = new Meta();
/**
* The meta-property for the {@code values} property.
*/
@SuppressWarnings({"unchecked", "rawtypes" })
private final MetaProperty<ImmutableList<T>> values = DirectMetaProperty.ofImmutable(
this, "values", DefaultScenarioArray.class, (Class) ImmutableList.class);
/**
* The meta-properties.
*/
private final Map<String, MetaProperty<?>> metaPropertyMap$ = new DirectMetaPropertyMap(
this, null,
"values");
/**
* Restricted constructor.
*/
private Meta() {
}
@Override
protected MetaProperty<?> metaPropertyGet(String propertyName) {
switch (propertyName.hashCode()) {
case -823812830: // values
return values;
}
return super.metaPropertyGet(propertyName);
}
@Override
public BeanBuilder<? extends DefaultScenarioArray<T>> builder() {
return new DefaultScenarioArray.Builder<T>();
}
@SuppressWarnings({"unchecked", "rawtypes" })
@Override
public Class<? extends DefaultScenarioArray<T>> beanType() {
return (Class) DefaultScenarioArray.class;
}
@Override
public Map<String, MetaProperty<?>> metaPropertyMap() {
return metaPropertyMap$;
}
//-----------------------------------------------------------------------
/**
* The meta-property for the {@code values} property.
* @return the meta-property, not null
*/
public MetaProperty<ImmutableList<T>> values() {
return values;
}
//-----------------------------------------------------------------------
@Override
protected Object propertyGet(Bean bean, String propertyName, boolean quiet) {
switch (propertyName.hashCode()) {
case -823812830: // values
return ((DefaultScenarioArray<?>) bean).getValues();
}
return super.propertyGet(bean, propertyName, quiet);
}
@Override
protected void propertySet(Bean bean, String propertyName, Object newValue, boolean quiet) {
metaProperty(propertyName);
if (quiet) {
return;
}
throw new UnsupportedOperationException("Property cannot be written: " + propertyName);
}
}
//-----------------------------------------------------------------------
/**
* The bean-builder for {@code DefaultScenarioArray}.
* @param <T> the type
*/
private static final class Builder<T> extends DirectFieldsBeanBuilder<DefaultScenarioArray<T>> {
private List<T> values = ImmutableList.of();
/**
* Restricted constructor.
*/
private Builder() {
}
//-----------------------------------------------------------------------
@Override
public Object get(String propertyName) {
switch (propertyName.hashCode()) {
case -823812830: // values
return values;
default:
throw new NoSuchElementException("Unknown property: " + propertyName);
}
}
@SuppressWarnings("unchecked")
@Override
public Builder<T> set(String propertyName, Object newValue) {
switch (propertyName.hashCode()) {
case -823812830: // values
this.values = (List<T>) newValue;
break;
default:
throw new NoSuchElementException("Unknown property: " + propertyName);
}
return this;
}
@Override
public Builder<T> set(MetaProperty<?> property, Object value) {
super.set(property, value);
return this;
}
@Override
public Builder<T> setString(String propertyName, String value) {
setString(meta().metaProperty(propertyName), value);
return this;
}
@Override
public Builder<T> setString(MetaProperty<?> property, String value) {
super.setString(property, value);
return this;
}
@Override
public Builder<T> setAll(Map<String, ? extends Object> propertyValueMap) {
super.setAll(propertyValueMap);
return this;
}
@Override
public DefaultScenarioArray<T> build() {
return new DefaultScenarioArray<T>(
values);
}
//-----------------------------------------------------------------------
@Override
public String toString() {
StringBuilder buf = new StringBuilder(64);
buf.append("DefaultScenarioArray.Builder{");
buf.append("values").append('=').append(JodaBeanUtils.toString(values));
buf.append('}');
return buf.toString();
}
}
///CLOVER:ON
//-------------------------- AUTOGENERATED END --------------------------
}