community/vector-stores/spring-ai-alibaba-starter-oceanbase-store/src/main/java/com/alibaba/cloud/ai/vectorstore/oceanbase/OceanBaseVectorFilterExpressionConverter.java [75:96]:
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	private String getOperationSymbol(Expression exp) {
		switch (exp.type()) {
			case AND:
				return " AND ";
			case OR:
				return " OR ";
			case EQ:
				return " = ";
			case NE:
				return " != ";
			case LT:
				return " < ";
			case LTE:
				return " <= ";
			case GT:
				return " > ";
			case GTE:
				return " >= ";
			default:
				throw new RuntimeException("Not supported expression type: " + exp.type());
		}
	}
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community/vector-stores/spring-ai-alibaba-starter-analyticdb-store/src/main/java/com/alibaba/cloud/ai/vectorstore/analyticdb/AdVectorFilterExpressionConverter.java [74:99]:
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	private String getOperationSymbol(Expression exp) {
		switch (exp.type()) {
			case AND:
				return " && ";
			case OR:
				return " || ";
			case EQ:
				return " = ";
			case NE:
				return " != ";
			case LT:
				return " < ";
			case LTE:
				return " <= ";
			case GT:
				return " > ";
			case GTE:
				return " >= ";
			// case IN:
			// return "IN";
			// case NIN:
			// return " NOT IN";
			default:
				throw new RuntimeException("Not supported expression type: " + exp.type());
		}
	}
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