com.eclipsesource.v8.V8Array.getDoubles()方法的使用及代码示例

x33g5p2x  于2022-02-01 转载在 其他  
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本文整理了Java中com.eclipsesource.v8.V8Array.getDoubles()方法的一些代码示例，展示了V8Array.getDoubles()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。V8Array.getDoubles()方法的具体详情如下：
包路径：com.eclipsesource.v8.V8Array
类名称：V8Array
方法名：getDoubles

V8Array.getDoubles介绍

[英]Returns the doubles contained in a subset of a V8Array. If the subset contains elements other than doubles, then a V8ResultUndefined exception is thrown. Furthermore, if the subset is not entirely contained within the array, then V8ResultUndefined exception is also thrown.
[中]返回包含在V8Array子集中的双精度数。如果子集包含除double之外的元素，则会引发V8ResultUndefined异常。此外，如果子集不完全包含在数组中，那么也会抛出V8ResultUndefined异常。

代码示例

代码示例来源：origin: eclipsesource/J2V8

/**
 * Creates a Java array from a V8Array. The type of the Array must be specified.
 * Currently, only INTEGER, DOUBLE, BOOLEAN and STRING are supported.
 * The V8Array must only contain elements of type 'arrayType'.
 *
 * This method will use J2V8's bulk array copy making it faster than iterating over
 * all the elements in the array.
 *
 * @param array The V8Array to convert to a Java Array.
 * @param arrayType The type of the V8Array to convert.
 *
 * @return A Java array representing a V8Array.
 */
public static Object getTypedArray(final V8Array array, final int arrayType) {
  int length = array.length();
  if (arrayType == V8Value.INTEGER) {
    return array.getIntegers(0, length);
  } else if (arrayType == V8Value.DOUBLE) {
    return array.getDoubles(0, length);
  } else if (arrayType == V8Value.BOOLEAN) {
    return array.getBooleans(0, length);
  } else if (arrayType == V8Value.STRING) {
    return array.getStrings(0, length);
  }
  throw new RuntimeException("Unsupported bulk load type: " + arrayType);
}

代码示例来源：origin: eclipsesource/J2V8

doubleArray = new double[length];
  array.getDoubles(0, length, doubleArray);
  return doubleArray;
} else if (arrayType == V8Value.BOOLEAN) {

代码示例来源：origin: eclipsesource/J2V8

/**
 * Creates a Java array from a V8Array. The type of the Array must be specified.
 * Currently, only INTEGER, DOUBLE, BOOLEAN and STRING are supported.
 * The V8Array must only contain elements of type 'arrayType'.
 *
 * This method will use J2V8's bulk array copy making it faster than iterating over
 * all the elements in the array.
 *
 * @param array The V8Array to convert to a Java Array.
 * @param arrayType The type of the V8Array to convert.
 *
 * @return A Java array representing a V8Array.
 */
public static Object getTypedArray(final V8Array array, final int arrayType) {
  int length = array.length();
  if (arrayType == V8Value.INTEGER) {
    return array.getIntegers(0, length);
  } else if (arrayType == V8Value.DOUBLE) {
    return array.getDoubles(0, length);
  } else if (arrayType == V8Value.BOOLEAN) {
    return array.getBooleans(0, length);
  } else if (arrayType == V8Value.STRING) {
    return array.getStrings(0, length);
  }
  throw new RuntimeException("Unsupported bulk load type: " + arrayType);
}

代码示例来源：origin: eclipsesource/J2V8

@Test(expected = UnsupportedOperationException.class)
public void testGetDoubles2Undefined() {
  V8Array undefined = v8.getArray("array");
  undefined.getDoubles(0, 1, new double[1]);
}

代码示例来源：origin: eclipsesource/J2V8

@Test(expected = UnsupportedOperationException.class)
public void testGetDoublesUndefined() {
  V8Array undefined = v8.getArray("array");
  undefined.getDoubles(0, 1);
}

代码示例来源：origin: eclipsesource/J2V8

doubleArray = new double[length];
  array.getDoubles(0, length, doubleArray);
  return doubleArray;
} else if (arrayType == V8Value.BOOLEAN) {

代码示例来源：origin: eclipsesource/J2V8

@Test(expected = IndexOutOfBoundsException.class)
public void testGetDoublesSmallerArray() {
  V8Array a = v8.executeArrayScript("[1,2,3.3,4.4]");
  double[] result = new double[3];
  try {
    a.getDoubles(0, 4, result);
  } finally {
    a.close();
  }
}

代码示例来源：origin: eclipsesource/J2V8

@Test
public void testGetDoubleSameSizeArray() {
  V8Array a = v8.executeArrayScript("[1,2.2,3.3,4]");
  double[] result = new double[4];
  int size = a.getDoubles(0, 4, result);
  assertEquals(4, size);
  a.close();
}

代码示例来源：origin: eclipsesource/J2V8

@Test
public void testGetDoublesBiggerArray() {
  V8Array a = v8.executeArrayScript("[1.1,2.2,3,4]");
  double[] result = new double[40];
  int size = a.getDoubles(0, 4, result);
  assertEquals(4, size);
  a.close();
}

代码示例来源：origin: eclipsesource/J2V8

@Test
public void testGetSubArrayOfDoubles() {
  V8Array a = v8.executeArrayScript("[1.1,2.1,3.1,4.1,5.1];");
  double[] result = a.getDoubles(4, 1);
  assertEquals(1, result.length);
  assertEquals(5.1, result[0], 0.000001);
  a.close();
}

代码示例来源：origin: eclipsesource/J2V8

@Test
public void testGetSubArrayOfDoubles2() {
  V8Array a = v8.executeArrayScript("[1.1,2.1,3.1,4.1,5.1];");
  double[] result = a.getDoubles(3, 2);
  assertEquals(2, result.length);
  assertEquals(4.1, result[0], 0.000001);
  assertEquals(5.1, result[1], 0.000001);
  a.close();
}

代码示例来源：origin: eclipsesource/J2V8

@Test
public void testGetDoublesPopulatesArray() {
  V8Array a = v8.executeArrayScript("[1.1,2.2,3.3,4]");
  double[] result = new double[4];
  a.getDoubles(0, 4, result);
  assertEquals(1.1, result[0], 0.000001);
  assertEquals(2.2, result[1], 0.000001);
  assertEquals(3.3, result[2], 0.000001);
  assertEquals(4, result[3], 0.000001);
  a.close();
}

代码示例来源：origin: eclipsesource/J2V8

@Test
public void testGetArrayOfDoubles() {
  V8Array a = v8.executeArrayScript("[1.1,2.1,3.1,4.1,5.1];");
  double[] result = a.getDoubles(0, 5);
  assertEquals(5, result.length);
  assertEquals(1.1, result[0], 000001);
  assertEquals(2.1, result[1], 000001);
  assertEquals(3.1, result[2], 000001);
  assertEquals(4.1, result[3], 000001);
  assertEquals(5.1, result[4], 000001);
  a.close();
}

代码示例来源：origin: com.eclipsesource.j2v8/j2v8_win32_x86_64

/**
 * Creates a Java array from a V8Array. The type of the Array must be specified.
 * Currently, only INTEGER, DOUBLE, BOOLEAN and STRING are supported.
 * The V8Array must only contain elements of type 'arrayType'.
 *
 * This method will use J2V8's bulk array copy making it faster than iterating over
 * all the elements in the array.
 *
 * @param array The V8Array to convert to a Java Array.
 * @param arrayType The type of the V8Array to convert.
 *
 * @return A Java array representing a V8Array.
 */
public static Object getTypedArray(final V8Array array, final int arrayType) {
  int length = array.length();
  if (arrayType == V8Value.INTEGER) {
    return array.getIntegers(0, length);
  } else if (arrayType == V8Value.DOUBLE) {
    return array.getDoubles(0, length);
  } else if (arrayType == V8Value.BOOLEAN) {
    return array.getBooleans(0, length);
  } else if (arrayType == V8Value.STRING) {
    return array.getStrings(0, length);
  }
  throw new RuntimeException("Unsupported bulk load type: " + arrayType);
}

代码示例来源：origin: com.eclipsesource.j2v8/j2v8_macosx_x86_64

/**
 * Creates a Java array from a V8Array. The type of the Array must be specified.
 * Currently, only INTEGER, DOUBLE, BOOLEAN and STRING are supported.
 * The V8Array must only contain elements of type 'arrayType'.
 *
 * This method will use J2V8's bulk array copy making it faster than iterating over
 * all the elements in the array.
 *
 * @param array The V8Array to convert to a Java Array.
 * @param arrayType The type of the V8Array to convert.
 *
 * @return A Java array representing a V8Array.
 */
public static Object getTypedArray(final V8Array array, final int arrayType) {
  int length = array.length();
  if (arrayType == V8Value.INTEGER) {
    return array.getIntegers(0, length);
  } else if (arrayType == V8Value.DOUBLE) {
    return array.getDoubles(0, length);
  } else if (arrayType == V8Value.BOOLEAN) {
    return array.getBooleans(0, length);
  } else if (arrayType == V8Value.STRING) {
    return array.getStrings(0, length);
  }
  throw new RuntimeException("Unsupported bulk load type: " + arrayType);
}

代码示例来源：origin: com.eclipsesource.j2v8/j2v8_win32_x86_64

doubleArray = new double[length];
  array.getDoubles(0, length, doubleArray);
  return doubleArray;
} else if (arrayType == V8Value.BOOLEAN) {

代码示例来源：origin: com.eclipsesource.j2v8/j2v8_macosx_x86_64

doubleArray = new double[length];
  array.getDoubles(0, length, doubleArray);
  return doubleArray;
} else if (arrayType == V8Value.BOOLEAN) {

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