Example usage for java.util Comparator Comparator

Introduction

In this page you can find the example usage for java.util Comparator Comparator.

Prototype

Comparator

Source Link

Usage

From source file:com.github.jinahya.sql.database.metadata.bind.FunctionColumn.java

public static Comparator<FunctionColumn> natural() {

    return new Comparator<FunctionColumn>() {

        @Override//w ww.j a v  a 2  s.  c om
        public int compare(final FunctionColumn o1, final FunctionColumn o2) {

            // by FUNCTION_CAT, FUNCTION_SCHEM, FUNCTION_NAME
            // and SPECIFIC_NAME.
            return new CompareToBuilder().append(o1.getFunctionCat(), o2.getFunctionCat())
                    .append(o1.getFunctionSchem(), o2.getFunctionSchem())
                    .append(o1.getFunctionName(), o2.getFunctionName())
                    .append(o1.getSpecificName(), o2.getSpecificName()).build();
        }

    };
}

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From source file:Main.java

public static Point findBestPreviewSizeValue(Camera.Parameters parameters, Point screenResolution) {

    List<Camera.Size> rawSupportedSizes = parameters.getSupportedPreviewSizes();
    if (rawSupportedSizes == null) {
        Log.w(TAG, "Device returned no supported preview sizes; using default");
        Camera.Size defaultSize = parameters.getPreviewSize();
        if (defaultSize == null) {
            throw new IllegalStateException("Parameters contained no preview size!");
        }//from   w  w w .j a  v  a  2s.com
        return new Point(defaultSize.width, defaultSize.height);
    }

    // Sort by size, descending
    List<Camera.Size> supportedPreviewSizes = new ArrayList<Camera.Size>(rawSupportedSizes);
    Collections.sort(supportedPreviewSizes, new Comparator<Camera.Size>() {
        @Override
        public int compare(Camera.Size a, Camera.Size b) {
            int aPixels = a.height * a.width;
            int bPixels = b.height * b.width;
            if (bPixels < aPixels) {
                return -1;
            }
            if (bPixels > aPixels) {
                return 1;
            }
            return 0;
        }
    });

    if (Log.isLoggable(TAG, Log.INFO)) {
        StringBuilder previewSizesString = new StringBuilder();
        for (Camera.Size supportedPreviewSize : supportedPreviewSizes) {
            previewSizesString.append(supportedPreviewSize.width).append('x')
                    .append(supportedPreviewSize.height).append(' ');
        }
        Log.i(TAG, "Supported preview sizes: " + previewSizesString);
    }

    double screenAspectRatio = (double) screenResolution.x / (double) screenResolution.y;

    // Remove sizes that are unsuitable
    Iterator<Camera.Size> it = supportedPreviewSizes.iterator();
    while (it.hasNext()) {
        Camera.Size supportedPreviewSize = it.next();
        int realWidth = supportedPreviewSize.width;
        int realHeight = supportedPreviewSize.height;
        if (realWidth * realHeight < MIN_PREVIEW_PIXELS) {
            it.remove();
            continue;
        }

        boolean isCandidatePortrait = realWidth < realHeight;
        int maybeFlippedWidth = isCandidatePortrait ? realHeight : realWidth;
        int maybeFlippedHeight = isCandidatePortrait ? realWidth : realHeight;
        double aspectRatio = (double) maybeFlippedWidth / (double) maybeFlippedHeight;
        double distortion = Math.abs(aspectRatio - screenAspectRatio);
        if (distortion > MAX_ASPECT_DISTORTION) {
            it.remove();
            continue;
        }

        if (maybeFlippedWidth == screenResolution.x && maybeFlippedHeight == screenResolution.y) {
            Point exactPoint = new Point(realWidth, realHeight);
            Log.i(TAG, "Found preview size exactly matching screen size: " + exactPoint);
            return exactPoint;
        }
    }

    // If no exact match, use largest preview size. This was not a great idea on older devices because
    // of the additional computation needed. We're likely to get here on newer Android 4+ devices, where
    // the CPU is much more powerful.
    if (!supportedPreviewSizes.isEmpty()) {
        Camera.Size largestPreview = supportedPreviewSizes.get(0);
        Point largestSize = new Point(largestPreview.width, largestPreview.height);
        Log.i(TAG, "Using largest suitable preview size: " + largestSize);
        return largestSize;
    }

    // If there is nothing at all suitable, return current preview size
    Camera.Size defaultPreview = parameters.getPreviewSize();
    if (defaultPreview == null) {
        throw new IllegalStateException("Parameters contained no preview size!");
    }
    Point defaultSize = new Point(defaultPreview.width, defaultPreview.height);
    Log.i(TAG, "No suitable preview sizes, using default: " + defaultSize);
    return defaultSize;
}

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From source file:com.github.jinahya.sql.database.metadata.bind.Attribute.java

public static Comparator<Attribute> natural() {

    return new Comparator<Attribute>() {

        @Override// w ww  .  java 2  s.  c o  m
        public int compare(final Attribute o1, final Attribute o2) {

            // TYPE_CAT, TYPE_SCHEM, TYPE_NAME and ORDINAL_POSITION.
            return new CompareToBuilder().append(o1.getTypeCat(), o2.getTypeCat())
                    .append(o1.getTypeSchem(), o2.getTypeSchem())
                    .append(o1.getOrdinalPosition(), o2.getOrdinalPosition()).build();
        }

    };
}

---

From source file:springfox.documentation.spi.service.contexts.Orderings.java

public static Comparator<Operation> positionComparator() {
    return new Comparator<Operation>() {
        @Override/*from ww  w  .  ja  va  2s  . co m*/
        public int compare(Operation first, Operation second) {
            return Ints.compare(first.getPosition(), second.getPosition());
        }
    };
}

---

From source file:Main.java

/**
 * Get the list of xml files in the bookmark export folder.
 * @return The list of xml files in the bookmark export folder.
 *//*from w ww .j  a  v a  2  s.c  o  m*/
public static List<String> getExportedBookmarksFileList() {
    List<String> result = new ArrayList<String>();

    File folder = Environment.getExternalStorageDirectory();

    if (folder != null) {

        FileFilter filter = new FileFilter() {

            @Override
            public boolean accept(File pathname) {
                if ((pathname.isFile()) && (pathname.getPath().toLowerCase(Locale.US).endsWith(".xml")
                        || pathname.getPath().toLowerCase(Locale.US).endsWith(".json"))) {
                    return true;
                }
                return false;
            }
        };

        File[] files = folder.listFiles(filter);

        for (File file : files) {
            result.add(file.getName());
        }
    }

    Collections.sort(result, new Comparator<String>() {

        @Override
        public int compare(String arg0, String arg1) {
            return arg1.compareTo(arg0);
        }
    });

    return result;
}

---

From source file:Main.java

/**
 * Get the list of xml files in the bookmark export folder.
 * @return The list of xml files in the bookmark export folder.
 *///from w ww. j a va  2 s.  co m
public static List<String> getExportedBookmarksFileList() {
    List<String> result = new ArrayList<String>();

    File folder = getBookmarksExportFolder();

    if (folder != null) {

        FileFilter filter = new FileFilter() {

            @Override
            public boolean accept(File pathname) {
                if ((pathname.isFile()) && (pathname.getPath().endsWith(".xml"))) {
                    return true;
                }
                return false;
            }
        };

        File[] files = folder.listFiles(filter);

        for (File file : files) {
            result.add(file.getName());
        }
    }

    Collections.sort(result, new Comparator<String>() {

        @Override
        public int compare(String arg0, String arg1) {
            return arg1.compareTo(arg0);
        }
    });

    return result;
}

---

From source file:Main.java

public static <E, V extends Comparable<? super V>, K> Map<K, V> sortByValueDesc(Map<K, V> map, int limit) {
    List<Map.Entry<K, V>> list = new LinkedList<Map.Entry<K, V>>(map.entrySet());
    Collections.sort(list, new Comparator<Map.Entry<K, V>>() {
        public int compare(Map.Entry<K, V> o1, Map.Entry<K, V> o2) {
            return (o2.getValue()).compareTo(o1.getValue());
        }/* w w  w.  ja  va2  s. c  o  m*/
    });

    Map<K, V> result = new LinkedHashMap<K, V>();
    int counter = 0;
    for (Map.Entry<K, V> entry : list) {
        if (limit > 0 && counter >= limit) {
            break;
        }
        result.put(entry.getKey(), entry.getValue());
        counter++;
    }
    return result;
}

---

From source file:Main.java

public static Point findBestPreviewSizeValue(Camera.Parameters parameters, Point screenResolution) {

    List<Camera.Size> rawSupportedSizes = parameters.getSupportedPreviewSizes();
    if (rawSupportedSizes == null) {
        //            Log.w(TAG, "Device returned no supported preview sizes; using default");
        Camera.Size defaultSize = parameters.getPreviewSize();
        if (defaultSize == null) {
            throw new IllegalStateException("Parameters contained no preview size!");
        }//w  w  w. j  av a2s.  com
        return new Point(defaultSize.width, defaultSize.height);
    }

    // Sort by size, descending
    List<Camera.Size> supportedPreviewSizes = new ArrayList<>(rawSupportedSizes);
    Collections.sort(supportedPreviewSizes, new Comparator<Camera.Size>() {
        @Override
        public int compare(Camera.Size a, Camera.Size b) {
            int aPixels = a.height * a.width;
            int bPixels = b.height * b.width;
            if (bPixels < aPixels) {
                return -1;
            }
            if (bPixels > aPixels) {
                return 1;
            }
            return 0;
        }
    });

    //        if (Log.isLoggable(TAG, Log.INFO)) {
    //            StringBuilder previewSizesString = new StringBuilder();
    //            for (Camera.Size supportedPreviewSize : supportedPreviewSizes) {
    //                previewSizesString.append(supportedPreviewSize.width).append('x')
    //                        .append(supportedPreviewSize.height).append(' ');
    //            }
    //            Log.i(TAG, "Supported preview sizes: " + previewSizesString);
    //        }

    double screenAspectRatio = (double) screenResolution.x / (double) screenResolution.y;

    // Remove sizes that are unsuitable
    Iterator<Camera.Size> it = supportedPreviewSizes.iterator();
    while (it.hasNext()) {
        Camera.Size supportedPreviewSize = it.next();
        int realWidth = supportedPreviewSize.width;
        int realHeight = supportedPreviewSize.height;
        if (realWidth * realHeight < MIN_PREVIEW_PIXELS) {
            it.remove();
            continue;
        }

        boolean isCandidatePortrait = realWidth < realHeight;
        int maybeFlippedWidth = isCandidatePortrait ? realHeight : realWidth;
        int maybeFlippedHeight = isCandidatePortrait ? realWidth : realHeight;
        double aspectRatio = (double) maybeFlippedWidth / (double) maybeFlippedHeight;
        double distortion = Math.abs(aspectRatio - screenAspectRatio);
        if (distortion > MAX_ASPECT_DISTORTION) {
            it.remove();
            continue;
        }

        if (maybeFlippedWidth == screenResolution.x && maybeFlippedHeight == screenResolution.y) {
            Point exactPoint = new Point(realWidth, realHeight);
            //                Log.i(TAG, "Found preview size exactly matching screen size: " + exactPoint);
            return exactPoint;
        }
    }

    // If no exact match, use largest preview size. This was not a great idea on older devices because
    // of the additional computation needed. We're likely to get here on newer Android 4+ devices, where
    // the CPU is much more powerful.
    if (!supportedPreviewSizes.isEmpty()) {
        Camera.Size largestPreview = supportedPreviewSizes.get(0);
        Point largestSize = new Point(largestPreview.width, largestPreview.height);
        //            Log.i(TAG, "Using largest suitable preview size: " + largestSize);
        return largestSize;
    }

    // If there is nothing at all suitable, return current preview size
    Camera.Size defaultPreview = parameters.getPreviewSize();
    if (defaultPreview == null) {
        throw new IllegalStateException("Parameters contained no preview size!");
    }
    Point defaultSize = new Point(defaultPreview.width, defaultPreview.height);
    //        Log.i(TAG, "No suitable preview sizes, using default: " + defaultSize);
    return defaultSize;
}

---

From source file:com.github.jinahya.sql.database.metadata.bind.Function.java

public static Comparator<Function> natural() {

    return new Comparator<Function>() {

        @Override//  ww w  .ja  va2s .  c  o  m
        public int compare(Function o1, Function o2) {

            // by FUNCTION_CAT, FUNCTION_SCHEM, FUNCTION_NAME
            // and SPECIFIC_NAME.
            return new CompareToBuilder().append(o1.getFunctionCat(), o2.getFunctionCat())
                    .append(o1.getFunctionSchem(), o2.getFunctionSchem())
                    .append(o1.getFunctionName(), o2.getFunctionName())
                    .append(o1.getSpecificName(), o2.getSpecificName()).build();
        }

    };
}

---

From source file:com.github.jinahya.sql.database.metadata.bind.ProcedureColumn.java

public static Comparator<ProcedureColumn> natural() {

    return new Comparator<ProcedureColumn>() {

        @Override//w  w w . j  a  va  2s .  c o  m
        public int compare(final ProcedureColumn o1, final ProcedureColumn o2) {

            // by PROCEDURE_CAT, PROCEDURE_SCHEM, PROCEDURE_NAME
            // and SPECIFIC_NAME.
            return new CompareToBuilder().append(o1.getProcedureCat(), o2.getProcedureCat())
                    .append(o1.getProcedureSchem(), o2.getProcedureSchem())
                    .append(o1.getProcedureName(), o2.getProcedureName())
                    .append(o1.getSpecificName(), o2.getSpecificName()).build();
        }

    };
}

---

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