com.ql.util.express.instruction.op.OperatorField Maven / Gradle / Ivy

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package com.ql.util.express.instruction.op;

import com.ql.util.express.ArraySwap;
import com.ql.util.express.InstructionSetContext;
import com.ql.util.express.OperateData;
import com.ql.util.express.config.QLExpressRunStrategy;
import com.ql.util.express.instruction.OperateDataCacheManager;

public class OperatorField extends OperatorBase {
    private String filedName;

    public OperatorField() {
        this.name = "FieldCall";
    }

    public OperatorField(String fieldName) {
        this.name = "FieldCall";
        this.filedName = fieldName;
    }

    @Override
    public OperateData executeInner(InstructionSetContext parent, ArraySwap list) throws Exception {
        OperateData operateData = list.get(0);
        if (operateData == null && QLExpressRunStrategy.isAvoidNullPointer()) {
            return null;
        }
        Object obj = operateData.getObject(parent);
        return OperateDataCacheManager.fetchOperateDataField(obj, this.filedName);
    }

    @Override
    public String toString() {
        return this.name + ":" + this.filedName;
    }
}