/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.financial.analytics.model.pnl;
import java.util.Collections;
import java.util.Set;
import org.apache.commons.lang.Validate;
import org.threeten.bp.Clock;
import org.threeten.bp.LocalDate;
import org.threeten.bp.Period;
import org.threeten.bp.ZonedDateTime;
import com.google.common.collect.Sets;
import com.opengamma.OpenGammaRuntimeException;
import com.opengamma.analytics.financial.schedule.HolidayDateRemovalFunction;
import com.opengamma.analytics.financial.schedule.Schedule;
import com.opengamma.analytics.financial.schedule.ScheduleCalculatorFactory;
import com.opengamma.analytics.financial.schedule.TimeSeriesSamplingFunction;
import com.opengamma.analytics.financial.schedule.TimeSeriesSamplingFunctionFactory;
import com.opengamma.core.historicaltimeseries.HistoricalTimeSeries;
import com.opengamma.core.security.Security;
import com.opengamma.engine.ComputationTarget;
import com.opengamma.engine.function.AbstractFunction;
import com.opengamma.engine.function.FunctionCompilationContext;
import com.opengamma.engine.function.FunctionExecutionContext;
import com.opengamma.engine.function.FunctionInputs;
import com.opengamma.engine.target.ComputationTargetType;
import com.opengamma.engine.value.ComputedValue;
import com.opengamma.engine.value.ValueProperties;
import com.opengamma.engine.value.ValuePropertyNames;
import com.opengamma.engine.value.ValueRequirement;
import com.opengamma.engine.value.ValueRequirementNames;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.financial.OpenGammaCompilationContext;
import com.opengamma.financial.analytics.timeseries.DateConstraint;
import com.opengamma.financial.analytics.timeseries.HistoricalTimeSeriesFunctionUtils;
import com.opengamma.financial.convention.calendar.Calendar;
import com.opengamma.financial.convention.calendar.MondayToFridayCalendar;
import com.opengamma.financial.security.FinancialSecurityTypes;
import com.opengamma.financial.security.FinancialSecurityUtils;
import com.opengamma.master.historicaltimeseries.HistoricalTimeSeriesResolutionResult;
import com.opengamma.master.historicaltimeseries.HistoricalTimeSeriesResolver;
import com.opengamma.timeseries.date.localdate.LocalDateDoubleTimeSeries;
/**
*
*/
public class SecurityPriceSeriesFunction extends AbstractFunction.NonCompiledInvoker {
private static final HolidayDateRemovalFunction HOLIDAY_REMOVER = HolidayDateRemovalFunction.getInstance();
private static final Calendar WEEKEND_CALENDAR = new MondayToFridayCalendar("Weekend");
private static final ComputationTargetType TYPE = FinancialSecurityTypes.FINANCIAL_SECURITY.or(FinancialSecurityTypes.RAW_SECURITY);
private final String _resolutionKey;
private final String _fieldName;
public SecurityPriceSeriesFunction(final String resolutionKey, final String fieldName) {
Validate.notNull(resolutionKey, "resolution key");
Validate.notNull(fieldName, "field name");
_resolutionKey = resolutionKey;
_fieldName = fieldName;
}
@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs, final ComputationTarget target, final Set<ValueRequirement> desiredValues) {
final Security security = target.getSecurity();
final Clock snapshotClock = executionContext.getValuationClock();
final LocalDate now = ZonedDateTime.now(snapshotClock).toLocalDate();
final ValueRequirement desiredValue = desiredValues.iterator().next();
final Set<String> samplingPeriodName = desiredValue.getConstraints().getValues(ValuePropertyNames.SAMPLING_PERIOD);
final Set<String> scheduleCalculatorName = desiredValue.getConstraints().getValues(ValuePropertyNames.SCHEDULE_CALCULATOR);
final Set<String> samplingFunctionName = desiredValue.getConstraints().getValues(ValuePropertyNames.SAMPLING_FUNCTION);
final Period samplingPeriod = getSamplingPeriod(samplingPeriodName);
final LocalDate startDate = now.minus(samplingPeriod);
final HistoricalTimeSeries hts = (HistoricalTimeSeries) inputs.getValue(ValueRequirementNames.HISTORICAL_TIME_SERIES);
final LocalDateDoubleTimeSeries ts = hts.getTimeSeries();
if (ts == null) {
throw new OpenGammaRuntimeException("Could not get price series for security " + security);
}
if (ts.isEmpty()) {
throw new OpenGammaRuntimeException("Empty price series for security " + security);
}
final Schedule scheduleCalculator = getScheduleCalculator(scheduleCalculatorName);
final TimeSeriesSamplingFunction samplingFunction = getSamplingFunction(samplingFunctionName);
final LocalDate[] schedule = HOLIDAY_REMOVER.getStrippedSchedule(scheduleCalculator.getSchedule(startDate, now, true, false), WEEKEND_CALENDAR); //REVIEW emcleod should "fromEnd" be hard-coded?
final LocalDateDoubleTimeSeries resultTS = samplingFunction.getSampledTimeSeries(ts, schedule);
final ValueProperties resultProperties = createValueProperties()
.with(ValuePropertyNames.SAMPLING_PERIOD, samplingPeriodName)
.with(ValuePropertyNames.SCHEDULE_CALCULATOR, scheduleCalculatorName)
.with(ValuePropertyNames.SAMPLING_FUNCTION, samplingFunctionName)
.with(ValuePropertyNames.CURRENCY, FinancialSecurityUtils.getCurrency(target.getSecurity()).getCode()).get();
final ValueSpecification valueSpecification = new ValueSpecification(ValueRequirementNames.PRICE_SERIES, target.toSpecification(), resultProperties);
final ComputedValue result = new ComputedValue(valueSpecification, resultTS);
return Sets.newHashSet(result);
}
@Override
public boolean canApplyTo(final FunctionCompilationContext context, final ComputationTarget target) {
try {
return FinancialSecurityUtils.getCurrency(target.getSecurity()) != null;
} catch (final UnsupportedOperationException e) {
return false;
}
}
@Override
public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context, final ComputationTarget target, final ValueRequirement desiredValue) {
final Set<String> samplingPeriods = desiredValue.getConstraints().getValues(ValuePropertyNames.SAMPLING_PERIOD);
if ((samplingPeriods == null) || (samplingPeriods.size() != 1)) {
return null;
}
final HistoricalTimeSeriesResolver resolver = OpenGammaCompilationContext.getHistoricalTimeSeriesResolver(context);
final HistoricalTimeSeriesResolutionResult timeSeries = resolver.resolve(target.getSecurity().getExternalIdBundle(), null, null, null, _fieldName, _resolutionKey);
if (timeSeries == null) {
return null;
}
return Collections.singleton(HistoricalTimeSeriesFunctionUtils.createHTSRequirement(timeSeries,
_fieldName, DateConstraint.VALUATION_TIME.minus(samplingPeriods.iterator().next()), true, DateConstraint.VALUATION_TIME, true));
}
@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target) {
final ValueProperties.Builder properties = createValueProperties();
properties
.withAny(ValuePropertyNames.SAMPLING_PERIOD)
.withAny(ValuePropertyNames.SCHEDULE_CALCULATOR)
.withAny(ValuePropertyNames.SAMPLING_FUNCTION)
.with(ValuePropertyNames.CURRENCY, FinancialSecurityUtils.getCurrency(target.getSecurity()).getCode());
return Collections.singleton(new ValueSpecification(ValueRequirementNames.PRICE_SERIES, target.toSpecification(), properties.get()));
}
@Override
public ComputationTargetType getTargetType() {
// REVIEW 2013-05-14 Andrew -- Instead of relying on "canApplyTo", putting only the classes for which "getCurrency" will return a happy value would be faster
return TYPE;
}
private Period getSamplingPeriod(final Set<String> samplingPeriodNames) {
if (samplingPeriodNames == null || samplingPeriodNames.isEmpty() || samplingPeriodNames.size() != 1) {
throw new OpenGammaRuntimeException("Missing or non-unique sampling period name: " + samplingPeriodNames);
}
return Period.parse(samplingPeriodNames.iterator().next());
}
private Schedule getScheduleCalculator(final Set<String> scheduleCalculatorNames) {
if (scheduleCalculatorNames == null || scheduleCalculatorNames.isEmpty() || scheduleCalculatorNames.size() != 1) {
throw new OpenGammaRuntimeException("Missing or non-unique schedule calculator name: " + scheduleCalculatorNames);
}
return ScheduleCalculatorFactory.getScheduleCalculator(scheduleCalculatorNames.iterator().next());
}
private TimeSeriesSamplingFunction getSamplingFunction(final Set<String> samplingFunctionNames) {
if (samplingFunctionNames == null || samplingFunctionNames.isEmpty() || samplingFunctionNames.size() != 1) {
throw new OpenGammaRuntimeException("Missing or non-unique sampling function name: " + samplingFunctionNames);
}
return TimeSeriesSamplingFunctionFactory.getFunction(samplingFunctionNames.iterator().next());
}
}