Examples of org.h2.index.IndexCondition

org.h2.message.TraceSystem
A index condition object is made for each condition that can potentially use an index. This class does not extend expression, but in general there is one expression that maps to each index condition.

    }


    public void createIndexConditions(Session session, TableFilter filter) {
        TableFilter tf = getTableFilter();
        if (filter == tf && column.getType() == Value.BOOLEAN) {
            IndexCondition cond = IndexCondition.get(Comparison.EQUAL, this, ValueExpression
                    .get(ValueBoolean.get(true)));
            filter.addIndexCondition(cond);
        }
    }

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     */
    public void prepare() {
        // forget all unused index conditions
        // the indexConditions list may be modified here
        for (int i = 0; i < indexConditions.size(); i++) {
            IndexCondition condition = indexConditions.get(i);
            if (!condition.isAlwaysFalse()) {
                Column col = condition.getColumn();
                if (col.getColumnId() >= 0) {
                    if (index.getColumnIndex(col) < 0) {
                        indexConditions.remove(i);
                        i--;
                    }

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     * Remove all index conditions that are not used by the current index.
     */
    void removeUnusableIndexConditions() {
        // the indexConditions list may be modified here
        for (int i = 0; i < indexConditions.size(); i++) {
            IndexCondition cond = indexConditions.get(i);
            if (!cond.isEvaluatable()) {
                indexConditions.remove(i--);
            }
        }
    }

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    }


    public void createIndexConditions(Session session, TableFilter filter) {
        TableFilter tf = getTableFilter();
        if (filter == tf && column.getType() == Value.BOOLEAN) {
            IndexCondition cond = IndexCondition.get(Comparison.EQUAL, this, ValueExpression
                    .get(ValueBoolean.get(true)));
            filter.addIndexCondition(cond);
        }
    }

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     */
    public void prepare() {
        // forget all unused index conditions
        // the indexConditions list may be modified here
        for (int i = 0; i < indexConditions.size(); i++) {
            IndexCondition condition = indexConditions.get(i);
            if (!condition.isAlwaysFalse()) {
                Column col = condition.getColumn();
                if (col.getColumnId() >= 0) {
                    if (index.getColumnIndex(col) < 0) {
                        indexConditions.remove(i);
                        i--;
                    }

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     * Remove all index conditions that are not used by the current index.
     */
    void removeUnusableIndexConditions() {
        // the indexConditions list may be modified here
        for (int i = 0; i < indexConditions.size(); i++) {
            IndexCondition cond = indexConditions.get(i);
            if (!cond.isEvaluatable()) {
                indexConditions.remove(i--);
            }
        }
    }

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    }


    public void createIndexConditions(Session session, TableFilter filter) {
        TableFilter tf = getTableFilter();
        if (filter == tf && column.getType() == Value.BOOLEAN) {
            IndexCondition cond = IndexCondition.get(Comparison.EQUAL, this, ValueExpression
                    .get(ValueBoolean.get(true)));
            filter.addIndexCondition(cond);
        }
    }

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     * can not be used, and optimize the conditions.
     */
    public void prepare() {
        // forget all unused index conditions
        for (int i = 0; i < indexConditions.size(); i++) {
            IndexCondition condition = indexConditions.get(i);
            if (!condition.isAlwaysFalse()) {
                Column col = condition.getColumn();
                if (index.getColumnIndex(col) < 0) {
                    indexConditions.remove(i);
                    i--;
                }
            }

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    /**
     * Remove all index conditions that are not used by the current index.
     */
    void removeUnusableIndexConditions() {
        for (int i = 0; i < indexConditions.size(); i++) {
            IndexCondition cond = indexConditions.get(i);
            if (!cond.isEvaluatable()) {
                indexConditions.remove(i--);
            }
        }
    }

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        testReadOnly();
        testAdapter();
    }


    private static void testAdapter() {
        TraceSystem ts = new TraceSystem(null);
        ts.setLevelFile(TraceSystem.ADAPTER);
        ts.getTrace("test").info("test");
        ts.close();
    }

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