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/*******************************************************************************
 * Copyright (c) 2006, 2018 IBM Corporation and others.
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - Jeff Briggs, Henry Hughes, Ryan Morse
 *******************************************************************************/

package org.eclipse.linuxtools.systemtap.graphing.core.datasets.table;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.linuxtools.systemtap.graphing.core.datasets.IDataEntry;

public class TableEntry implements IDataEntry {
    public TableEntry() {
        bodyContent = new ArrayList<>();
    }

    @Override
    public int getRowCount() {
        return bodyContent.size();
    }

    @Override
    public int getColCount() {
        if(getRowCount() > 0) {
            return bodyContent.get(0).length;
        }
        return 0;
    }

    @Override
    public Object get(String key, int col) {
        if(col >= 0 && col < getColCount()) {
            Object[] row = getRow(key);
            if(null != row)
                return row[col];
        }
        return null;
    }

    @Override
    public Object[][] getData() {
        Object[][] d = new Object[getRowCount()][getColCount()];
        for(int i=0; i<getRowCount(); i++) {
            d[i] = getRow(i);
        }
        return d;
    }

    @Override
    public Object[] getRow(int row) {
        if(row < 0 || row >= getRowCount())
            return null;
        return bodyContent.get(row);
    }

    @Override
    public Object[] getRow(String key) {
        Object[] row;
        for(int i=0; i<bodyContent.size(); i++) {
            row = bodyContent.get(i);
            if(row[0].toString().equals(key))
                return row;
        }
        return null;
    }

    @Override
    public Object[] getColumn(int col) {
        return getColumn(col, 0, getRowCount());
    }

    public Object[] getColumn(int col, int start, int end) {
        if(0 <= col && getColCount() > col && start >=0 && end > start && end <= getRowCount()) {
            Object[] res = new Object[Math.min(end-start, getRowCount())];
            for(int i=0; i<res.length; i++)
                res[i] = bodyContent.get(i+start)[col];
            return res;
        }
        return null;
    }

    @Override
    public void putRow(int row, Object[] data) {
        if(row >= bodyContent.size())
            add(data);
        else if(row >= 0) {
            bodyContent.add(row, data);
            bodyContent.remove(row+1);
        }
    }

    public void add(Object[] data) {
        if(null != data && (data.length == getColCount() || getRowCount() == 0))
            bodyContent.add(data);
    }

    @Override
    public IDataEntry copy() {
        TableEntry entry = new TableEntry();
        for(int i=0; i<bodyContent.size(); i++)
            entry.add(bodyContent.get(i));

        return entry;
    }

    @Override
    public boolean remove(int row) {
        return (null != bodyContent.remove(row));
    }

    private List<Object[]> bodyContent;    //ArrayList of arrays
}

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