SimpleExpression.java

package com.github.walker.easydb.criterion;

import com.github.walker.easydb.assistant.MappingUtil;
import com.github.walker.easydb.datatype.EString;

public class SimpleExpression extends Criteria {

    private String left;

    private String value;

    private String op;

    protected SimpleExpression(String propertyName, Object value, String op) {
        this.left = MappingUtil.getColumnName(propertyName);

        if (value instanceof String || value instanceof EString) {
            String v = value.toString();
            v = v.replace("\'", "''");// 将条件中的单引号替换成丙个单引号
            this.value = "\'" + v + "\'";
        } else {
            this.value = value.toString();
        }

        this.op = op;
    }

    public String toSqlString() {
        return left + ' ' + op + ' ' + value;
    }

    public String getValueByLeft(String left) {
        return this.value;
    }

    protected String getOp() {
        return this.op;
    }

    protected String getLeft() {
        return this.left;
    }

    protected String getValue() {
        return this.value;
    }

}