update
This commit is contained in:
twmht
parent
7304c207f6
commit
381bcf92a3
5 changed files with 45 additions and 47 deletions
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@ -16,16 +16,16 @@ Python bindings to the C++ interface of http://rocksdb.org/ using pybind11::
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assert(s.ok())
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# put
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opts = pyrocksdb.WriteOptions()
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s = db.put(opts, "key1", "value1")
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s = db.put(opts, b"key1", b"value1")
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assert (s.ok())
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# get
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opts = pyrocksdb.ReadOptions()
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blob = db.get(opts, "key1")
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print (blob.data) # value1
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blob = db.get(opts, b"key1")
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print (blob.data) # b"value1"
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print (blob.status.ok()) # true
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#delete
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opts = pyrocksdb.WriteOptions()
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s = db.delete(opts, "key1")
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s = db.delete(opts, b"key1")
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assert(s.ok())
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db.close()
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@ -10,9 +10,9 @@ apply them in a single operation ::
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update = pyrocksdb.WriteBatch()
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# collect the operations
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update.put('key1', 'value1')
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update.put('key2', 'value2')
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update.delete('key1')
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update.put(b'key1', b'value1')
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update.put(b'key2', b'value2')
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update.delete(b'key1')
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opts = pyrocksdb.WriteOptions()
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# Apply these operatios in a single operation
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@ -20,11 +20,11 @@ apply them in a single operation ::
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assert s.ok()
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opts = pyrocksdb.ReadOptions()
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blob = db.get(opts, 'key1')
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blob = db.get(opts, b'key1')
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assert blob.status.is_not_found()
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blob = db.get(opts, 'key2')
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blob = db.get(opts, b'key2')
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assert blob.status.ok()
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assert blob.data == 'value2'
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assert blob.data == b'value2'
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db.close()
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@ -35,36 +35,35 @@ Iterators behave slightly different than expected. Per default they are not
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valid. So you have to call one of its seek methods first ::
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opts = pyrocksdb.WriteOptions()
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s = {'key1': 'value1', 'key2': 'value2', 'key3': 'value3'}
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s = {b'key1': b'value1', b'key2': b'value2', b'key3': b'value3'}
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for k, v in s.items():
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db.put(opts, k, v)
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opts = pyrocksdb.ReadOptions()
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it = db.iterator(opts)
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# call this first
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it.seek_to_first()
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assert it.status().ok()
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assert it.valid()
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for k, v in s.items():
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assert it.key().data() == k
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assert it.value().data() == v
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assert it.key() == k
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assert it.value() == v
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it.next()
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assert not it.valid()
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it.seek('key1')
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it.seek(b'key1')
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assert it.valid()
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assert it.key().data() == 'key1'
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assert it.value().data() == 'value1'
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it.seek('key2')
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assert it.key() == b'key1'
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assert it.value() == b'value1'
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it.seek(b'key2')
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assert it.valid()
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assert it.key().data() == 'key2'
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assert it.value().data() == 'value2'
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assert it.key() == b'key2'
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assert it.value() == b'value2'
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it.seek('key4')
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it.seek(b'key4')
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assert not it.valid()
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it.seek_for_prev('key0')
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it.seek_for_prev(b'key0')
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assert not it.valid()
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it.seek_for_prev('key4')
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it.seek_for_prev(b'key4')
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assert it.valid()
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@ -47,16 +47,16 @@
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<span class="k">assert</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">ok</span><span class="p">())</span>
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<span class="c1"># put</span>
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<span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">WriteOptions</span><span class="p">()</span>
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<span class="n">s</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="s2">"key1"</span><span class="p">,</span> <span class="s2">"value1"</span><span class="p">)</span>
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<span class="n">s</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="sa">b</span><span class="s2">"key1"</span><span class="p">,</span> <span class="sa">b</span><span class="s2">"value1"</span><span class="p">)</span>
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<span class="k">assert</span> <span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">ok</span><span class="p">())</span>
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<span class="c1"># get</span>
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<span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">ReadOptions</span><span class="p">()</span>
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<span class="n">blob</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="s2">"key1"</span><span class="p">)</span>
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<span class="nb">print</span> <span class="p">(</span><span class="n">blob</span><span class="o">.</span><span class="n">data</span><span class="p">)</span> <span class="c1"># value1</span>
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<span class="n">blob</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="sa">b</span><span class="s2">"key1"</span><span class="p">)</span>
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<span class="nb">print</span> <span class="p">(</span><span class="n">blob</span><span class="o">.</span><span class="n">data</span><span class="p">)</span> <span class="c1"># b"value1"</span>
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<span class="nb">print</span> <span class="p">(</span><span class="n">blob</span><span class="o">.</span><span class="n">status</span><span class="o">.</span><span class="n">ok</span><span class="p">())</span> <span class="c1"># true</span>
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<span class="c1">#delete</span>
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<span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">WriteOptions</span><span class="p">()</span>
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<span class="n">s</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="s2">"key1"</span><span class="p">)</span>
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<span class="n">s</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="sa">b</span><span class="s2">"key1"</span><span class="p">)</span>
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<span class="k">assert</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">ok</span><span class="p">())</span>
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<span class="n">db</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
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</pre></div>
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@ -1 +1 @@
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@ -41,9 +41,9 @@ apply them in a single operation</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">update</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">WriteBatch</span><span class="p">()</span>
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<span class="c1"># collect the operations</span>
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<span class="n">update</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="s1">'key1'</span><span class="p">,</span> <span class="s1">'value1'</span><span class="p">)</span>
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<span class="n">update</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="s1">'key2'</span><span class="p">,</span> <span class="s1">'value2'</span><span class="p">)</span>
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<span class="n">update</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="s1">'key1'</span><span class="p">)</span>
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<span class="n">update</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key1'</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'value1'</span><span class="p">)</span>
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<span class="n">update</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key2'</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'value2'</span><span class="p">)</span>
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<span class="n">update</span><span class="o">.</span><span class="n">delete</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key1'</span><span class="p">)</span>
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<span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">WriteOptions</span><span class="p">()</span>
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<span class="c1"># Apply these operatios in a single operation</span>
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@ -51,11 +51,11 @@ apply them in a single operation</p>
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<span class="k">assert</span> <span class="n">s</span><span class="o">.</span><span class="n">ok</span><span class="p">()</span>
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<span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">ReadOptions</span><span class="p">()</span>
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<span class="n">blob</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="s1">'key1'</span><span class="p">)</span>
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<span class="n">blob</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'key1'</span><span class="p">)</span>
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<span class="k">assert</span> <span class="n">blob</span><span class="o">.</span><span class="n">status</span><span class="o">.</span><span class="n">is_not_found</span><span class="p">()</span>
|
||||
<span class="n">blob</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="s1">'key2'</span><span class="p">)</span>
|
||||
<span class="n">blob</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'key2'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="n">blob</span><span class="o">.</span><span class="n">status</span><span class="o">.</span><span class="n">ok</span><span class="p">()</span>
|
||||
<span class="k">assert</span> <span class="n">blob</span><span class="o">.</span><span class="n">data</span> <span class="o">==</span> <span class="s1">'value2'</span>
|
||||
<span class="k">assert</span> <span class="n">blob</span><span class="o">.</span><span class="n">data</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'value2'</span>
|
||||
|
||||
<span class="n">db</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
|
||||
</pre></div>
|
||||
|
|
@ -66,38 +66,37 @@ apply them in a single operation</p>
|
|||
<p>Iterators behave slightly different than expected. Per default they are not
|
||||
valid. So you have to call one of its seek methods first</p>
|
||||
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">WriteOptions</span><span class="p">()</span>
|
||||
<span class="n">s</span> <span class="o">=</span> <span class="p">{</span><span class="s1">'key1'</span><span class="p">:</span> <span class="s1">'value1'</span><span class="p">,</span> <span class="s1">'key2'</span><span class="p">:</span> <span class="s1">'value2'</span><span class="p">,</span> <span class="s1">'key3'</span><span class="p">:</span> <span class="s1">'value3'</span><span class="p">}</span>
|
||||
<span class="n">s</span> <span class="o">=</span> <span class="p">{</span><span class="sa">b</span><span class="s1">'key1'</span><span class="p">:</span> <span class="sa">b</span><span class="s1">'value1'</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'key2'</span><span class="p">:</span> <span class="sa">b</span><span class="s1">'value2'</span><span class="p">,</span> <span class="sa">b</span><span class="s1">'key3'</span><span class="p">:</span> <span class="sa">b</span><span class="s1">'value3'</span><span class="p">}</span>
|
||||
<span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">s</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||||
<span class="n">db</span><span class="o">.</span><span class="n">put</span><span class="p">(</span><span class="n">opts</span><span class="p">,</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
|
||||
|
||||
<span class="n">opts</span> <span class="o">=</span> <span class="n">pyrocksdb</span><span class="o">.</span><span class="n">ReadOptions</span><span class="p">()</span>
|
||||
<span class="n">it</span> <span class="o">=</span> <span class="n">db</span><span class="o">.</span><span class="n">iterator</span><span class="p">(</span><span class="n">opts</span><span class="p">)</span>
|
||||
<span class="c1"># call this first</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek_to_first</span><span class="p">()</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">status</span><span class="p">()</span><span class="o">.</span><span class="n">ok</span><span class="p">()</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
<span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">s</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">key</span><span class="p">()</span><span class="o">.</span><span class="n">data</span><span class="p">()</span> <span class="o">==</span> <span class="n">k</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">value</span><span class="p">()</span><span class="o">.</span><span class="n">data</span><span class="p">()</span> <span class="o">==</span> <span class="n">v</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">key</span><span class="p">()</span> <span class="o">==</span> <span class="n">k</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">value</span><span class="p">()</span> <span class="o">==</span> <span class="n">v</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">next</span><span class="p">()</span>
|
||||
|
||||
<span class="k">assert</span> <span class="ow">not</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="s1">'key1'</span><span class="p">)</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key1'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">key</span><span class="p">()</span><span class="o">.</span><span class="n">data</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'key1'</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">value</span><span class="p">()</span><span class="o">.</span><span class="n">data</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'value1'</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="s1">'key2'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">key</span><span class="p">()</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'key1'</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">value</span><span class="p">()</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'value1'</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key2'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">key</span><span class="p">()</span><span class="o">.</span><span class="n">data</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'key2'</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">value</span><span class="p">()</span><span class="o">.</span><span class="n">data</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'value2'</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">key</span><span class="p">()</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'key2'</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">value</span><span class="p">()</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">'value2'</span>
|
||||
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="s1">'key4'</span><span class="p">)</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key4'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="ow">not</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek_for_prev</span><span class="p">(</span><span class="s1">'key0'</span><span class="p">)</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek_for_prev</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key0'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="ow">not</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek_for_prev</span><span class="p">(</span><span class="s1">'key4'</span><span class="p">)</span>
|
||||
<span class="n">it</span><span class="o">.</span><span class="n">seek_for_prev</span><span class="p">(</span><span class="sa">b</span><span class="s1">'key4'</span><span class="p">)</span>
|
||||
<span class="k">assert</span> <span class="n">it</span><span class="o">.</span><span class="n">valid</span><span class="p">()</span>
|
||||
</pre></div>
|
||||
</div>
|
||||
|
|
|
|||
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Reference in a new issue