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package com.github.antelopeframework.mybatis.criterion;

/**
 * A SQL fragment. The string {alias} will be replaced by the alias of the root
 * entity.
 * 
 * @author yangzhi.yzh
 */
public class SQLCriterion implements Criterion {
	private static final long serialVersionUID = 1L;

	private final String sql;
	private final TypedValue[] typedValues;

	protected SQLCriterion(String sql, Object[] values, int[] sqlTypes) {
		this.sql = sql;
		this.typedValues = new TypedValue[values.length];
		for (int i = 0; i < typedValues.length; i++) {
			typedValues[i] = new TypedValue(sqlTypes[i], values[i]);
		}
	}

	protected SQLCriterion(String sql, Object value, int sqlType) {
		this.sql = sql;
		this.typedValues = new TypedValue[] { new TypedValue(sqlType, value) };
	}

	protected SQLCriterion(String sql) {
		this.sql = sql;
		this.typedValues = new TypedValue[0];
	}

	@Override
	public String toSqlString(CriteriaQuery criteriaQuery) {
		return sql;
	}

	@Override
	public TypedValue[] getTypedValues(CriteriaQuery criteriaQuery) {
		return typedValues;
	}

	@Override
	public String toString() {
		return sql;
	}
}