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PHP bitset_union函数代码示例

本文整理汇总了PHP中bitset_union函数的典型用法代码示例。如果您正苦于以下问题:PHP bitset_union函数的具体用法?PHP bitset_union怎么用?PHP bitset_union使用的例子?那么, 这里精选的函数代码示例或许可以为您提供帮助。


在下文中一共展示了bitset_union函数的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的PHP代码示例。

示例1: _calculateNonConjunctionResult

 /**
  * Calculate result vector for non Conjunction query
  * (like '+something -another')
  *
  * @param Zend_Search_Lucene $reader
  */
 private function _calculateNonConjunctionResult($reader)
 {
     if (extension_loaded('bitset')) {
         $required = null;
         $neither = bitset_empty();
         $prohibited = bitset_empty();
         foreach ($this->_terms as $termId => $term) {
             $termDocs = bitset_from_array($reader->termDocs($term));
             if ($this->_signs[$termId] === true) {
                 // required
                 if ($required !== null) {
                     $required = bitset_intersection($required, $termDocs);
                 } else {
                     $required = $termDocs;
                 }
             } elseif ($this->_signs[$termId] === false) {
                 // prohibited
                 $prohibited = bitset_union($prohibited, $termDocs);
             } else {
                 // neither required, nor prohibited
                 $neither = bitset_union($neither, $termDocs);
             }
             $this->_termsPositions[$termId] = $reader->termPositions($term);
         }
         if ($required === null) {
             $required = $neither;
         }
         $this->_resVector = bitset_intersection($required, bitset_invert($prohibited, $reader->count()));
     } else {
         $required = null;
         $neither = array();
         $prohibited = array();
         foreach ($this->_terms as $termId => $term) {
             $termDocs = array_flip($reader->termDocs($term));
             if ($this->_signs[$termId] === true) {
                 // required
                 if ($required !== null) {
                     // substitute for bitset_intersection
                     foreach ($required as $key => $value) {
                         if (!isset($termDocs[$key])) {
                             unset($required[$key]);
                         }
                     }
                 } else {
                     $required = $termDocs;
                 }
             } elseif ($this->_signs[$termId] === false) {
                 // prohibited
                 // substitute for bitset_union
                 foreach ($termDocs as $key => $value) {
                     $prohibited[$key] = $value;
                 }
             } else {
                 // neither required, nor prohibited
                 // substitute for bitset_union
                 foreach ($termDocs as $key => $value) {
                     $neither[$key] = $value;
                 }
             }
             $this->_termsPositions[$termId] = $reader->termPositions($term);
         }
         if ($required === null) {
             $required = $neither;
         }
         foreach ($required as $key => $value) {
             if (isset($prohibited[$key])) {
                 unset($required[$key]);
             }
         }
         $this->_resVector = $required;
     }
 }
开发者ID:Nurudeen,项目名称:prado,代码行数:78,代码来源:MultiTerm.php

示例2: writeChanges

    /**
     * Write changes if it's necessary.
     *
     * This method must be invoked only from the Writer _updateSegments() method,
     * so index Write lock has to be already obtained.
     *
     * @internal
     * @throws Zend_Search_Lucene_Exceptions
     */
    public function writeChanges()
    {
        // Get new generation number
        $latestDelGen = $this->_detectLatestDelGen();

        if (!$this->_deletedDirty) {
        	// There was no deletions by current process

            if ($latestDelGen == $this->_delGen) {
            	// Delete file hasn't been updated by any concurrent process
            	return;
            } else if ($latestDelGen > $this->_delGen) {
            	// Delete file has been updated by some concurrent process
            	// Reload deletions file
            	$this->_delGen  = $latestDelGen;
            	$this->_deleted = $this->_loadDelFile();

            	return;
            } else {
            	require_once 'Zend/Search/Lucene/Exception.php';
            	throw new Zend_Search_Lucene_Exception('Delete file processing workflow is corrupted for the segment \'' . $this->_name . '\'.');
            }
        }

        if ($latestDelGen > $this->_delGen) {
        	// Merge current deletions with latest deletions file
        	$this->_delGen = $latestDelGen;

        	$latestDelete = $this->_loadDelFile();

        	if (extension_loaded('bitset')) {
        		$this->_deleted = bitset_union($this->_deleted, $latestDelete);
        	} else {
        		$this->_deleted += $latestDelete;
        	}
        }

        if (extension_loaded('bitset')) {
            $delBytes = $this->_deleted;
            $bitCount = count(bitset_to_array($delBytes));
        } else {
            $byteCount = floor($this->_docCount/8)+1;
            $delBytes = str_repeat(chr(0), $byteCount);
            for ($count = 0; $count < $byteCount; $count++) {
                $byte = 0;
                for ($bit = 0; $bit < 8; $bit++) {
                    if (isset($this->_deleted[$count*8 + $bit])) {
                        $byte |= (1<<$bit);
                    }
                }
                $delBytes[$count] = chr($byte);
            }
            $bitCount = count($this->_deleted);
        }

        if ($this->_delGen == -1) {
            // Set delete file generation number to 1
            $this->_delGen = 1;
        } else {
            // Increase delete file generation number by 1
            $this->_delGen++;
        }

        $delFile = $this->_directory->createFile($this->_name . '_' . base_convert($this->_delGen, 10, 36) . '.del');
        $delFile->writeInt($this->_docCount);
        $delFile->writeInt($bitCount);
        $delFile->writeBytes($delBytes);

        $this->_deletedDirty = false;
    }
开发者ID:realfluid,项目名称:umbaugh,代码行数:79,代码来源:SegmentInfo.php

示例3: writeChanges

 public function writeChanges()
 {
     $latestDelGen = $this->_detectLatestDelGen();
     if (!$this->_deletedDirty) {
         if ($latestDelGen == $this->_delGen) {
             return;
         } else {
             if ($latestDelGen > $this->_delGen) {
                 $this->_delGen = $latestDelGen;
                 $this->_deleted = $this->_loadDelFile();
                 return;
             } else {
                 throw new Zend_Search_Lucene_Exception('Delete file processing workflow is corrupted for the segment \'' . $this->_name . '\'.');
             }
         }
     }
     if ($latestDelGen > $this->_delGen) {
         $this->_delGen = $latestDelGen;
         $latestDelete = $this->_loadDelFile();
         if (extension_loaded('bitset')) {
             $this->_deleted = bitset_union($this->_deleted, $latestDelete);
         } else {
             $this->_deleted += $latestDelete;
         }
     }
     if (extension_loaded('bitset')) {
         $delBytes = $this->_deleted;
         $bitCount = count(bitset_to_array($delBytes));
     } else {
         $byteCount = floor($this->_docCount / 8) + 1;
         $delBytes = str_repeat(chr(0), $byteCount);
         for ($count = 0; $count < $byteCount; $count++) {
             $byte = 0;
             for ($bit = 0; $bit < 8; $bit++) {
                 if (isset($this->_deleted[$count * 8 + $bit])) {
                     $byte |= 1 << $bit;
                 }
             }
             $delBytes[$count] = chr($byte);
         }
         $bitCount = count($this->_deleted);
     }
     if ($this->_delGen == -1) {
         $this->_delGen = 1;
     } else {
         $this->_delGen++;
     }
     $delFile = $this->_directory->createFile($this->_name . '_' . base_convert($this->_delGen, 10, 36) . '.del');
     $delFile->writeInt($this->_docCount);
     $delFile->writeInt($bitCount);
     $delFile->writeBytes($delBytes);
     $this->_deletedDirty = false;
 }
开发者ID:Blu2z,项目名称:implsk,代码行数:53,代码来源:Zend_Search_Lucene.php


注:本文中的bitset_union函数示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。