Using Python to Operate Coherence
Coherence is a Distributed cache and data management platform, which provides an easy-to-use Python API to operate database connection and data insertion, query, modification and deletion operations. The following is an example of using Python to operate a Coherence database:
Firstly, ensure that the Coherence and Coherence PyInstaller dependency libraries are installed. You can install it using the following command:
bash
pip install coherence
pip install coherence-pyinstaller
Next, import the necessary Coherence modules and classes:
python
from coherence import Coherence
from coherence.api import Cache
Create a Coherence instance and connect to the database:
python
coherence = Coherence("your_coherence_config.xml")
cache = coherence.ensure_cache("your_cache_name")
The following operations can now be used to operate the database:
1. Insert data:
python
cache.put("key", "value")
2. Query data:
python
value = cache.get("key")
3. Modify data:
python
cache.put("key", "new_value")
4. Delete data:
python
cache.remove("key")
The complete example code is as follows:
python
from coherence import Coherence
from coherence.api import Cache
#Create a Coherence instance and connect to the database
coherence = Coherence("your_coherence_config.xml")
cache = coherence.ensure_cache("your_cache_name")
#Insert Data
cache.put("key", "value")
#Query data
value = cache.get("key")
Print (value) # Output: value
#Modify data
cache.put("key", "new_value")
#Delete data
cache.remove("key")
Please ensure to replace the "you_coherence_config. xml" and "you_cachename" in the example with the actual configuration file and cache name.