LSQMCurveIncrement.java

package org.drip.dynamics.evolution;

/*
 * -*- mode: java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 */

/*!
 * Copyright (C) 2020 Lakshmi Krishnamurthy
 * Copyright (C) 2019 Lakshmi Krishnamurthy
 * Copyright (C) 2018 Lakshmi Krishnamurthy
 * Copyright (C) 2017 Lakshmi Krishnamurthy
 * Copyright (C) 2016 Lakshmi Krishnamurthy
 * Copyright (C) 2015 Lakshmi Krishnamurthy
 * 
 *  This file is part of DROP, an open-source library targeting analytics/risk, transaction cost analytics,
 *      asset liability management analytics, capital, exposure, and margin analytics, valuation adjustment
 *      analytics, and portfolio construction analytics within and across fixed income, credit, commodity,
 *      equity, FX, and structured products. It also includes auxiliary libraries for algorithm support,
 *      numerical analysis, numerical optimization, spline builder, model validation, statistical learning,
 *      and computational support.
 *  
 *      https://lakshmidrip.github.io/DROP/
 *  
 *  DROP is composed of three modules:
 *  
 *  - DROP Product Core - https://lakshmidrip.github.io/DROP-Product-Core/
 *  - DROP Portfolio Core - https://lakshmidrip.github.io/DROP-Portfolio-Core/
 *  - DROP Computational Core - https://lakshmidrip.github.io/DROP-Computational-Core/
 * 
 *  DROP Product Core implements libraries for the following:
 *  - Fixed Income Analytics
 *  - Loan Analytics
 *  - Transaction Cost Analytics
 * 
 *  DROP Portfolio Core implements libraries for the following:
 *  - Asset Allocation Analytics
 *  - Asset Liability Management Analytics
 *  - Capital Estimation Analytics
 *  - Exposure Analytics
 *  - Margin Analytics
 *  - XVA Analytics
 * 
 *  DROP Computational Core implements libraries for the following:
 *  - Algorithm Support
 *  - Computation Support
 *  - Function Analysis
 *  - Model Validation
 *  - Numerical Analysis
 *  - Numerical Optimizer
 *  - Spline Builder
 *  - Statistical Learning
 * 
 *  Documentation for DROP is Spread Over:
 * 
 *  - Main                     => https://lakshmidrip.github.io/DROP/
 *  - Wiki                     => https://github.com/lakshmiDRIP/DROP/wiki
 *  - GitHub                   => https://github.com/lakshmiDRIP/DROP
 *  - Repo Layout Taxonomy     => https://github.com/lakshmiDRIP/DROP/blob/master/Taxonomy.md
 *  - Javadoc                  => https://lakshmidrip.github.io/DROP/Javadoc/index.html
 *  - Technical Specifications => https://github.com/lakshmiDRIP/DROP/tree/master/Docs/Internal
 *  - Release Versions         => https://lakshmidrip.github.io/DROP/version.html
 *  - Community Credits        => https://lakshmidrip.github.io/DROP/credits.html
 *  - Issues Catalog           => https://github.com/lakshmiDRIP/DROP/issues
 *  - JUnit                    => https://lakshmidrip.github.io/DROP/junit/index.html
 *  - Jacoco                   => https://lakshmidrip.github.io/DROP/jacoco/index.html
 * 
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *      you may not use this file except in compliance with the License.
 *   
 *  You may obtain a copy of the License at
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *      distributed under the License is distributed on an "AS IS" BASIS,
 *      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  
 *  See the License for the specific language governing permissions and
 *      limitations under the License.
 */

/**
 * <i>LSQMCurveIncrement</i> contains the Increment of the Evolving Term Structure of the Latent State
 * Quantification Metrics.
 *
 *  <br><br>
 *  <ul>
 *      <li><b>Module </b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/ProductCore.md">Product Core Module</a></li>
 *      <li><b>Library</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/FixedIncomeAnalyticsLibrary.md">Fixed Income Analytics</a></li>
 *      <li><b>Project</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/dynamics/README.md">HJM, Hull White, LMM, and SABR Dynamic Evolution Models</a></li>
 *      <li><b>Package</b> = <a href = "https://github.com/lakshmiDRIP/DROP/tree/master/src/main/java/org/drip/dynamics/evolution/README.md">Latent State Evolution Edges/Vertexes</a></li>
 *  </ul>
 *
 * @author Lakshmi Krishnamurthy
 */

public class LSQMCurveIncrement {
    private java.util.Map<java.lang.String, java.util.Map<java.lang.String, org.drip.spline.grid.Span>>
        _mmIncrement = new java.util.HashMap<java.lang.String, java.util.Map<java.lang.String,
            org.drip.spline.grid.Span>>();

    /**
     * Empty LSQMCurveIncrement Constructor
     */

    public LSQMCurveIncrement()
    {
    }

    /**
     * Retrieve the Latent State Labels
     * 
     * @return The Latent State Labels
     */

    public java.util.Set<java.lang.String> latentStateLabel()
    {
        return _mmIncrement.keySet();
    }

    /**
     * Indicate if Quantification Metrics are available for the specified Latent State
     * 
     * @param lsl The Latent State Label
     * 
     * @return TRUE - Quantification Metrics are available for the specified Latent State
     */

    public boolean containsLatentState (
        final org.drip.state.identifier.LatentStateLabel lsl)
    {
        return null == lsl ? false : _mmIncrement.containsKey (lsl.fullyQualifiedName());
    }

    /**
     * Indicate if the Value for the specified Quantification Metric is available
     * 
     * @param lsl The Latent State Label
     * @param strQM The Quantification Metric
     * 
     * @return TRUE - The Requested Value is available
     */

    public boolean containsQM (
        final org.drip.state.identifier.LatentStateLabel lsl,
        final java.lang.String strQM)
    {
        if (null == lsl || null == strQM || strQM.isEmpty()) return false;

        java.lang.String strLabel = lsl.fullyQualifiedName();

        return _mmIncrement.containsKey (strLabel) && _mmIncrement.get (strLabel).containsKey (strQM);
    }

    /**
     * Set the LSQM Increment Span
     * 
     * @param lsl The Latent State Label
     * @param strQM The Quantification Metric
     * @param spanIncrement The Increment Span
     * 
     * @return TRUE - The LSQM Increment Span successfully set
     */

    public boolean setQMSpan (
        final org.drip.state.identifier.LatentStateLabel lsl,
        final java.lang.String strQM,
        final org.drip.spline.grid.Span spanIncrement)
    {
        if (null == lsl || null == strQM || strQM.isEmpty() || null == spanIncrement) return false;

        java.lang.String strLabel = lsl.fullyQualifiedName();

        java.util.Map<java.lang.String, org.drip.spline.grid.Span> mapSpanIncrement =
            _mmIncrement.containsKey (strLabel) ? _mmIncrement.get (strLabel) : new
                java.util.HashMap<java.lang.String, org.drip.spline.grid.Span>();

        mapSpanIncrement.put (strQM, spanIncrement);

        _mmIncrement.put (strLabel, mapSpanIncrement);

        return true;
    }

    /**
     * Retrieve the specified Latent State Quantification Metric Span Increment
     * 
     * @param lsl The Latent State Label
     * @param strQM The Quantification Metric
     * 
     * @return The Latent State Quantification Metric Span Increment
     */

    public org.drip.spline.grid.Span span (
        final org.drip.state.identifier.LatentStateLabel lsl,
        final java.lang.String strQM)
    {
        if (null == lsl || null == strQM || strQM.isEmpty()) return null;

        java.lang.String strLabel = lsl.fullyQualifiedName();

        java.util.Map<java.lang.String, org.drip.spline.grid.Span> mapSpanIncrement = _mmIncrement.get
            (strLabel);

        return mapSpanIncrement.containsKey (strQM) ? mapSpanIncrement.get (strQM) : null;
    }
}