ScalarSubquery.java

/* Generated By:JJTree: Do not edit this line. ScalarSubquery.java Version 4.3 */
/* JavaCCOptions:MULTI=true,NODE_USES_PARSER=true,VISITOR=true,TRACK_TOKENS=false,NODE_PREFIX=,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
package org.teiid.query.sql.symbol;

import org.teiid.designer.annotation.Since;
import org.teiid.designer.query.sql.symbol.IScalarSubquery;
import org.teiid.designer.runtime.version.spi.ITeiidServerVersion;
import org.teiid.designer.runtime.version.spi.TeiidServerVersion.Version;
import org.teiid.query.parser.LanguageVisitor;
import org.teiid.query.sql.lang.QueryCommand;
import org.teiid.query.sql.lang.SimpleNode;
import org.teiid.query.sql.lang.SubqueryContainer;
import org.teiid.query.sql.lang.SubqueryHint;

/**
 *
 */
public class ScalarSubquery extends SimpleNode
    implements Expression, SubqueryContainer<QueryCommand>, IScalarSubquery<LanguageVisitor, QueryCommand> {

    private QueryCommand command;

    private Class<?> type;

    @Since(Version.TEIID_8_10)
    private SubqueryHint subqueryHint = new SubqueryHint();

    private boolean shouldEvaluate;

    /**
     * @param p
     * @param id
     */
    public ScalarSubquery(ITeiidServerVersion p, int id) {
        super(p, id);
    }

    /**
     * @return the command
     */
    @Override
    public QueryCommand getCommand() {
        return command;
    }

    /**
     * @param command the command to set
     */
    @Override
    public void setCommand(QueryCommand command) {
        this.command = command;
    }

    @Override
    public Class<?> getType() {
        if (this.type == null){
            Expression symbol = this.command.getProjectedSymbols().iterator().next();
            this.type = symbol.getType();
        }
        //may still be null if this.command wasn't resolved
        return this.type;
    }

    /**
     * Set type of ScalarSubquery
     * @param type New type
     */
    public void setType(Class<?> type) {
        this.type = type;
    }

    /**
     * @return sub query hint
     */
    @Since(Version.TEIID_8_10)
    public SubqueryHint getSubqueryHint() {
        return subqueryHint;
    }

    /**
     * @param subqueryHint
     */
    @Since(Version.TEIID_8_10)
    public void setSubqueryHint(SubqueryHint subqueryHint) {
        this.subqueryHint = subqueryHint;
    }

    /**
     * @return whether to evaluate
     */
    public boolean shouldEvaluate() {
        return shouldEvaluate;
    }
    
    /**
     * @param shouldEvaluate
     */
    public void setShouldEvaluate(boolean shouldEvaluate) {
        this.shouldEvaluate = shouldEvaluate;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((this.command == null) ? 0 : this.command.hashCode());
        result = prime * result + ((this.type == null) ? 0 : this.type.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) return true;
        if (!super.equals(obj)) return false;
        if (getClass() != obj.getClass()) return false;
        ScalarSubquery other = (ScalarSubquery)obj;
        if (this.command == null) {
            if (other.command != null) return false;
        } else if (!this.command.equals(other.command)) return false;
        if (this.type == null) {
            if (other.type != null) return false;
        } else if (!this.type.equals(other.type)) return false;

        if(getTeiidVersion().isGreaterThanOrEqualTo(Version.TEIID_8_10)) {
            if (this.subqueryHint == null) {
                if (other.subqueryHint != null) return false;
            } else if (!this.subqueryHint.equals(other.subqueryHint)) return false;
        }

        return true;
    }

    /** Accept the visitor. **/
    @Override
    public void acceptVisitor(LanguageVisitor visitor) {
        visitor.visit(this);
    }

    @Override
    public ScalarSubquery clone() {
        ScalarSubquery clone = new ScalarSubquery(getTeiidVersion(), this.id);

        if(getType() != null)
            clone.setType(getType());
        if(getCommand() != null)
            clone.setCommand(getCommand().clone());
        if (getSubqueryHint() != null) {
            clone.setSubqueryHint(getSubqueryHint().clone());
        }
        return clone;
    }

}
/* JavaCC - OriginalChecksum=bfe243691ae4c256b98aff43709faeed (do not edit this line) */