/**
* Copyright (C) 2014 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.financial.analytics.surface;
import static com.opengamma.engine.value.ValuePropertyNames.SURFACE;
import static com.opengamma.engine.value.ValueRequirementNames.SURFACE_SPECIFICATION;
import java.util.Collections;
import java.util.Set;
import org.threeten.bp.Instant;
import org.threeten.bp.LocalTime;
import org.threeten.bp.ZoneOffset;
import org.threeten.bp.ZonedDateTime;
import com.opengamma.OpenGammaRuntimeException;
import com.opengamma.engine.ComputationTarget;
import com.opengamma.engine.ComputationTargetSpecification;
import com.opengamma.engine.function.AbstractFunction;
import com.opengamma.engine.function.CompiledFunctionDefinition;
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.SurfaceAndCubePropertyNames;
import com.opengamma.engine.value.ValueProperties;
import com.opengamma.engine.value.ValueRequirement;
import com.opengamma.engine.value.ValueSpecification;
import com.opengamma.util.ArgumentChecker;
/**
* Gets a {@link SurfaceSpecification} from the database.
*/
public class SurfaceSpecificationFunction extends AbstractFunction {
/** The surface specification name */
private final String _surfaceSpecificationName;
/** The surface specification source */
private ConfigDBSurfaceSpecificationSource _surfaceSpecificationSource;
/**
* @param surfaceSpecificationName The surface specification name, not null
*/
public SurfaceSpecificationFunction(final String surfaceSpecificationName) {
ArgumentChecker.notNull(surfaceSpecificationName, "surfaceSpecificationName");
_surfaceSpecificationName = surfaceSpecificationName;
}
@Override
public void init(final FunctionCompilationContext context) {
_surfaceSpecificationSource = ConfigDBSurfaceSpecificationSource.init(context, this);
}
@Override
public CompiledFunctionDefinition compile(final FunctionCompilationContext outerContext, final Instant atInstant) {
final ZonedDateTime atZDT = ZonedDateTime.ofInstant(atInstant, ZoneOffset.UTC);
final SurfaceSpecification specification = _surfaceSpecificationSource.getSpecification(_surfaceSpecificationName);
if (specification == null) {
throw new OpenGammaRuntimeException("Could not get specification called " + _surfaceSpecificationName);
}
final ValueProperties properties = createValueProperties()
.with(SURFACE, _surfaceSpecificationName)
.with(SurfaceAndCubePropertyNames.PROPERTY_SURFACE_QUOTE_TYPE, specification.getQuoteType())
.with(SurfaceAndCubePropertyNames.PROPERTY_SURFACE_UNITS, specification.getQuoteUnits())
.get();
final ValueSpecification spec = new ValueSpecification(SURFACE_SPECIFICATION, ComputationTargetSpecification.NULL, properties);
final Set<ComputedValue> result = Collections.singleton(new ComputedValue(spec, specification));
return new AbstractInvokingCompiledFunction(atZDT.with(LocalTime.MIDNIGHT).toInstant(), atZDT.plusDays(1).with(LocalTime.MIDNIGHT).minusNanos(1000000).toInstant()) {
@Override
public Set<ComputedValue> execute(final FunctionExecutionContext executionContext, final FunctionInputs inputs, final ComputationTarget target,
final Set<ValueRequirement> desiredValues) {
return result;
}
@Override
public ComputationTargetType getTargetType() {
return ComputationTargetType.NULL;
}
@Override
public Set<ValueSpecification> getResults(final FunctionCompilationContext context, final ComputationTarget target) {
return Collections.singleton(spec);
}
@Override
public Set<ValueRequirement> getRequirements(final FunctionCompilationContext context, final ComputationTarget target, final ValueRequirement desiredValue) {
return Collections.emptySet();
}
};
}
}